1 | "use strict";
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2 |
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3 | import {
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4 | Block, BlockTag, BlockWithTransactions, EventType, Filter, FilterByBlockHash, ForkEvent,
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5 | Listener, Log, Provider, TransactionReceipt, TransactionRequest, TransactionResponse
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6 | } from "@ethersproject/abstract-provider";
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7 | import { encode as base64Encode } from "@ethersproject/base64";
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8 | import { Base58 } from "@ethersproject/basex";
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9 | import { BigNumber, BigNumberish } from "@ethersproject/bignumber";
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10 | import { arrayify, BytesLike, concat, hexConcat, hexDataLength, hexDataSlice, hexlify, hexValue, hexZeroPad, isHexString } from "@ethersproject/bytes";
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11 | import { HashZero } from "@ethersproject/constants";
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12 | import { dnsEncode, namehash } from "@ethersproject/hash";
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13 | import { getNetwork, Network, Networkish } from "@ethersproject/networks";
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14 | import { Deferrable, defineReadOnly, getStatic, resolveProperties } from "@ethersproject/properties";
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15 | import { Transaction } from "@ethersproject/transactions";
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16 | import { sha256 } from "@ethersproject/sha2";
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17 | import { toUtf8Bytes, toUtf8String } from "@ethersproject/strings";
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18 | import { fetchJson, poll } from "@ethersproject/web";
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19 |
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20 | import bech32 from "bech32";
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21 |
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22 | import { Logger } from "@ethersproject/logger";
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23 | import { version } from "./_version";
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24 | const logger = new Logger(version);
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25 |
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26 | import { Formatter } from "./formatter";
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27 |
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28 | const MAX_CCIP_REDIRECTS = 10;
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29 |
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30 |
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31 |
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32 |
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33 | function checkTopic(topic: string): string {
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34 | if (topic == null) { return "null"; }
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35 | if (hexDataLength(topic) !== 32) {
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36 | logger.throwArgumentError("invalid topic", "topic", topic);
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37 | }
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38 | return topic.toLowerCase();
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39 | }
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40 |
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41 | function serializeTopics(topics: Array<string | Array<string>>): string {
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42 |
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43 | topics = topics.slice();
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44 | while (topics.length > 0 && topics[topics.length - 1] == null) { topics.pop(); }
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45 |
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46 | return topics.map((topic) => {
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47 | if (Array.isArray(topic)) {
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48 |
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49 |
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50 | const unique: { [ topic: string ]: boolean } = { }
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51 | topic.forEach((topic) => {
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52 | unique[checkTopic(topic)] = true;
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53 | });
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54 |
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55 |
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56 | const sorted = Object.keys(unique);
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57 | sorted.sort();
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58 |
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59 | return sorted.join("|");
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60 |
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61 | } else {
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62 | return checkTopic(topic);
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63 | }
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64 | }).join("&");
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65 | }
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66 |
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67 | function deserializeTopics(data: string): Array<string | Array<string>> {
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68 | if (data === "") { return [ ]; }
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69 |
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70 | return data.split(/&/g).map((topic) => {
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71 | if (topic === "") { return [ ]; }
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72 |
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73 | const comps = topic.split("|").map((topic) => {
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74 | return ((topic === "null") ? null: topic);
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75 | });
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76 |
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77 | return ((comps.length === 1) ? comps[0]: comps);
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78 | });
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79 | }
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80 |
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81 | function getEventTag(eventName: EventType): string {
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82 | if (typeof(eventName) === "string") {
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83 | eventName = eventName.toLowerCase();
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84 |
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85 | if (hexDataLength(eventName) === 32) {
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86 | return "tx:" + eventName;
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87 | }
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88 |
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89 | if (eventName.indexOf(":") === -1) {
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90 | return eventName;
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91 | }
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92 |
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93 | } else if (Array.isArray(eventName)) {
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94 | return "filter:*:" + serializeTopics(eventName);
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95 |
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96 | } else if (ForkEvent.isForkEvent(eventName)) {
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97 | logger.warn("not implemented");
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98 | throw new Error("not implemented");
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99 |
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100 | } else if (eventName && typeof(eventName) === "object") {
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101 | return "filter:" + (eventName.address || "*") + ":" + serializeTopics(eventName.topics || []);
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102 | }
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103 |
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104 | throw new Error("invalid event - " + eventName);
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105 | }
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106 |
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107 |
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108 |
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109 |
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110 | function getTime() {
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111 | return (new Date()).getTime();
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112 | }
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113 |
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114 | function stall(duration: number): Promise<void> {
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115 | return new Promise((resolve) => {
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116 | setTimeout(resolve, duration);
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117 | });
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118 | }
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119 |
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120 |
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121 |
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122 |
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123 |
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124 |
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125 |
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126 |
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127 |
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128 |
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129 |
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130 |
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131 |
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132 |
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133 |
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134 |
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135 |
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136 |
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137 | const PollableEvents = [ "block", "network", "pending", "poll" ];
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138 |
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139 | export class Event {
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140 | readonly listener: Listener;
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141 | readonly once: boolean;
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142 | readonly tag: string;
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143 |
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144 | _lastBlockNumber: number
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145 | _inflight: boolean;
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146 |
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147 | constructor(tag: string, listener: Listener, once: boolean) {
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148 | defineReadOnly(this, "tag", tag);
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149 | defineReadOnly(this, "listener", listener);
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150 | defineReadOnly(this, "once", once);
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151 |
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152 | this._lastBlockNumber = -2;
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153 | this._inflight = false;
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154 | }
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155 |
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156 | get event(): EventType {
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157 | switch (this.type) {
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158 | case "tx":
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159 | return this.hash;
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160 | case "filter":
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161 | return this.filter;
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162 | }
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163 | return this.tag;
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164 | }
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165 |
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166 | get type(): string {
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167 | return this.tag.split(":")[0]
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168 | }
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169 |
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170 | get hash(): string {
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171 | const comps = this.tag.split(":");
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172 | if (comps[0] !== "tx") { return null; }
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173 | return comps[1];
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174 | }
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175 |
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176 | get filter(): Filter {
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177 | const comps = this.tag.split(":");
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178 | if (comps[0] !== "filter") { return null; }
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179 | const address = comps[1];
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180 |
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181 | const topics = deserializeTopics(comps[2]);
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182 | const filter: Filter = { };
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183 |
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184 | if (topics.length > 0) { filter.topics = topics; }
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185 | if (address && address !== "*") { filter.address = address; }
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186 |
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187 | return filter;
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188 | }
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189 |
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190 | pollable(): boolean {
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191 | return (this.tag.indexOf(":") >= 0 || PollableEvents.indexOf(this.tag) >= 0);
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192 | }
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193 | }
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194 |
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195 | export interface EnsResolver {
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196 |
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197 |
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198 | readonly name: string;
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199 |
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200 |
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201 | readonly address: string;
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202 |
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203 |
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204 |
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205 | getAddress(coinType?: 60): Promise<null | string>
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206 |
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207 |
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208 |
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209 | getContentHash(): Promise<null | string>;
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210 |
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211 |
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212 |
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213 | getText(key: string): Promise<null | string>;
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214 | };
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215 |
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216 | export interface EnsProvider {
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217 | resolveName(name: string): Promise<null | string>;
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218 | lookupAddress(address: string): Promise<null | string>;
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219 | getResolver(name: string): Promise<null | EnsResolver>;
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220 | }
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221 |
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222 | type CoinInfo = {
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223 | symbol: string,
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224 | ilk?: string,
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225 | prefix?: string,
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226 | p2pkh?: number,
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227 | p2sh?: number,
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228 | };
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229 |
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230 |
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231 | const coinInfos: { [ coinType: string ]: CoinInfo } = {
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232 | "0": { symbol: "btc", p2pkh: 0x00, p2sh: 0x05, prefix: "bc" },
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233 | "2": { symbol: "ltc", p2pkh: 0x30, p2sh: 0x32, prefix: "ltc" },
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234 | "3": { symbol: "doge", p2pkh: 0x1e, p2sh: 0x16 },
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235 | "60": { symbol: "eth", ilk: "eth" },
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236 | "61": { symbol: "etc", ilk: "eth" },
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237 | "700": { symbol: "xdai", ilk: "eth" },
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238 | };
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239 |
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240 | function bytes32ify(value: number): string {
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241 | return hexZeroPad(BigNumber.from(value).toHexString(), 32);
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242 | }
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243 |
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244 |
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245 | function base58Encode(data: Uint8Array): string {
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246 | return Base58.encode(concat([ data, hexDataSlice(sha256(sha256(data)), 0, 4) ]));
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247 | }
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248 |
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249 | export interface Avatar {
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250 | url: string;
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251 | linkage: Array<{ type: string, content: string }>;
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252 | }
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253 |
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254 | const matcherIpfs = new RegExp("^(ipfs):/\/(.*)$", "i");
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255 | const matchers = [
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256 | new RegExp("^(https):/\/(.*)$", "i"),
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257 | new RegExp("^(data):(.*)$", "i"),
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258 | matcherIpfs,
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259 | new RegExp("^eip155:[0-9]+/(erc[0-9]+):(.*)$", "i"),
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260 | ];
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261 |
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262 | function _parseString(result: string, start: number): null | string {
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263 | try {
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264 | return toUtf8String(_parseBytes(result, start));
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265 | } catch(error) { }
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266 | return null;
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267 | }
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268 |
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269 | function _parseBytes(result: string, start: number): null | string {
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270 | if (result === "0x") { return null; }
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271 |
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272 | const offset = BigNumber.from(hexDataSlice(result, start, start + 32)).toNumber();
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273 | const length = BigNumber.from(hexDataSlice(result, offset, offset + 32)).toNumber();
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274 |
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275 | return hexDataSlice(result, offset + 32, offset + 32 + length);
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276 | }
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277 |
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278 |
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279 | function getIpfsLink(link: string): string {
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280 | if (link.match(/^ipfs:\/\/ipfs\//i)) {
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281 | link = link.substring(12);
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282 | } else if (link.match(/^ipfs:\/\//i)) {
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283 | link = link.substring(7);
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284 | } else {
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285 | logger.throwArgumentError("unsupported IPFS format", "link", link);
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286 | }
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287 |
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288 | return `https:/\/gateway.ipfs.io/ipfs/${ link }`;
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289 | }
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290 |
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291 | function numPad(value: number): Uint8Array {
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292 | const result = arrayify(value);
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293 | if (result.length > 32) { throw new Error("internal; should not happen"); }
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294 |
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295 | const padded = new Uint8Array(32);
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296 | padded.set(result, 32 - result.length);
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297 | return padded;
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298 | }
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299 |
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300 | function bytesPad(value: Uint8Array): Uint8Array {
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301 | if ((value.length % 32) === 0) { return value; }
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302 |
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303 | const result = new Uint8Array(Math.ceil(value.length / 32) * 32);
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304 | result.set(value);
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305 | return result;
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306 | }
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307 |
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308 |
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309 | function encodeBytes(datas: Array<BytesLike>) {
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310 | const result: Array<Uint8Array> = [ ];
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311 |
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312 | let byteCount = 0;
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313 |
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314 |
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315 | for (let i = 0; i < datas.length; i++) {
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316 | result.push(null);
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317 | byteCount += 32;
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318 | }
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319 |
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320 | for (let i = 0; i < datas.length; i++) {
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321 | const data = arrayify(datas[i]);
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322 |
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323 |
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324 | result[i] = numPad(byteCount);
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325 |
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326 |
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327 | result.push(numPad(data.length));
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328 | result.push(bytesPad(data));
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329 | byteCount += 32 + Math.ceil(data.length / 32) * 32;
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330 | }
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331 |
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332 | return hexConcat(result);
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333 | }
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334 |
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335 | export class Resolver implements EnsResolver {
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336 | readonly provider: BaseProvider;
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337 |
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338 | readonly name: string;
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339 | readonly address: string;
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340 |
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341 | readonly _resolvedAddress: null | string;
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342 |
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343 |
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344 | _supportsEip2544: null | Promise<boolean>;
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345 |
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346 |
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347 | constructor(provider: BaseProvider, address: string, name: string, resolvedAddress?: string) {
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348 | defineReadOnly(this, "provider", provider);
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349 | defineReadOnly(this, "name", name);
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350 | defineReadOnly(this, "address", provider.formatter.address(address));
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351 | defineReadOnly(this, "_resolvedAddress", resolvedAddress);
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352 | }
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353 |
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354 | supportsWildcard(): Promise<boolean> {
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355 | if (!this._supportsEip2544) {
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356 |
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357 | this._supportsEip2544 = this.provider.call({
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358 | to: this.address,
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359 | data: "0x01ffc9a79061b92300000000000000000000000000000000000000000000000000000000"
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360 | }).then((result) => {
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361 | return BigNumber.from(result).eq(1);
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362 | }).catch((error) => {
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363 | if (error.code === Logger.errors.CALL_EXCEPTION) { return false; }
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364 |
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365 | this._supportsEip2544 = null;
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366 | throw error;
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367 | });
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368 | }
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369 |
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370 | return this._supportsEip2544;
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371 | }
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372 |
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373 | async _fetch(selector: string, parameters?: string): Promise<null | string> {
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374 |
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375 |
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376 | const tx = {
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377 | to: this.address,
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378 | ccipReadEnabled: true,
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379 | data: hexConcat([ selector, namehash(this.name), (parameters || "0x") ])
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380 | };
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381 |
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382 |
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383 | let parseBytes = false;
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384 | if (await this.supportsWildcard()) {
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385 | parseBytes = true;
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386 |
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387 |
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388 | tx.data = hexConcat([ "0x9061b923", encodeBytes([ dnsEncode(this.name), tx.data ]) ]);
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389 | }
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390 |
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391 | try {
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392 | let result = await this.provider.call(tx);
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393 | if ((arrayify(result).length % 32) === 4) {
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394 | logger.throwError("resolver threw error", Logger.errors.CALL_EXCEPTION, {
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395 | transaction: tx, data: result
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396 | });
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397 | }
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398 | if (parseBytes) { result = _parseBytes(result, 0); }
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399 | return result;
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400 | } catch (error) {
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401 | if (error.code === Logger.errors.CALL_EXCEPTION) { return null; }
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402 | throw error;
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403 | }
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404 | }
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405 |
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406 | async _fetchBytes(selector: string, parameters?: string): Promise<null | string> {
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407 | const result = await this._fetch(selector, parameters);
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408 | if (result != null) { return _parseBytes(result, 0); }
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409 | return null;
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410 | }
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411 |
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412 | _getAddress(coinType: number, hexBytes: string): string {
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413 | const coinInfo = coinInfos[String(coinType)];
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414 |
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415 | if (coinInfo == null) {
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416 | logger.throwError(`unsupported coin type: ${ coinType }`, Logger.errors.UNSUPPORTED_OPERATION, {
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417 | operation: `getAddress(${ coinType })`
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418 | });
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419 | }
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420 |
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421 | if (coinInfo.ilk === "eth") {
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422 | return this.provider.formatter.address(hexBytes);
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423 | }
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424 |
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425 | const bytes = arrayify(hexBytes);
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426 |
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427 |
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428 | if (coinInfo.p2pkh != null) {
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429 | const p2pkh = hexBytes.match(/^0x76a9([0-9a-f][0-9a-f])([0-9a-f]*)88ac$/);
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430 | if (p2pkh) {
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431 | const length = parseInt(p2pkh[1], 16);
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432 | if (p2pkh[2].length === length * 2 && length >= 1 && length <= 75) {
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433 | return base58Encode(concat([ [ coinInfo.p2pkh ], ("0x" + p2pkh[2]) ]));
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434 | }
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435 | }
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436 | }
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437 |
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438 |
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439 | if (coinInfo.p2sh != null) {
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440 | const p2sh = hexBytes.match(/^0xa9([0-9a-f][0-9a-f])([0-9a-f]*)87$/);
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441 | if (p2sh) {
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442 | const length = parseInt(p2sh[1], 16);
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443 | if (p2sh[2].length === length * 2 && length >= 1 && length <= 75) {
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444 | return base58Encode(concat([ [ coinInfo.p2sh ], ("0x" + p2sh[2]) ]));
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445 | }
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446 | }
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447 | }
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448 |
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449 |
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450 | if (coinInfo.prefix != null) {
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451 | const length = bytes[1];
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452 |
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453 |
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454 | let version = bytes[0];
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455 | if (version === 0x00) {
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456 | if (length !== 20 && length !== 32) {
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457 | version = -1;
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458 | }
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459 | } else {
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460 | version = -1;
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461 | }
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462 |
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463 | if (version >= 0 && bytes.length === 2 + length && length >= 1 && length <= 75) {
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464 | const words = bech32.toWords(bytes.slice(2));
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465 | words.unshift(version);
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466 | return bech32.encode(coinInfo.prefix, words);
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467 | }
|
468 | }
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469 |
|
470 | return null;
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471 | }
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472 |
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473 |
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474 | async getAddress(coinType?: number): Promise<string> {
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475 | if (coinType == null) { coinType = 60; }
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476 |
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477 |
|
478 | if (coinType === 60) {
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479 | try {
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480 |
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481 | const result = await this._fetch("0x3b3b57de");
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482 |
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483 |
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484 | if (result === "0x" || result === HashZero) { return null; }
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485 |
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486 | return this.provider.formatter.callAddress(result);
|
487 | } catch (error) {
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488 | if (error.code === Logger.errors.CALL_EXCEPTION) { return null; }
|
489 | throw error;
|
490 | }
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491 | }
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492 |
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493 |
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494 | const hexBytes = await this._fetchBytes("0xf1cb7e06", bytes32ify(coinType));
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495 |
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496 |
|
497 | if (hexBytes == null || hexBytes === "0x") { return null; }
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498 |
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499 |
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500 | const address = this._getAddress(coinType, hexBytes);
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501 |
|
502 | if (address == null) {
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503 | logger.throwError(`invalid or unsupported coin data`, Logger.errors.UNSUPPORTED_OPERATION, {
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504 | operation: `getAddress(${ coinType })`,
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505 | coinType: coinType,
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506 | data: hexBytes
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507 | });
|
508 | }
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509 |
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510 | return address;
|
511 | }
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512 |
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513 | async getAvatar(): Promise<null | Avatar> {
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514 | const linkage: Array<{ type: string, content: string }> = [ { type: "name", content: this.name } ];
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515 | try {
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516 |
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517 |
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518 | const avatar = await this.getText("avatar");
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519 | if (avatar == null) { return null; }
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520 |
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521 | for (let i = 0; i < matchers.length; i++) {
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522 | const match = avatar.match(matchers[i]);
|
523 | if (match == null) { continue; }
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524 |
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525 | const scheme = match[1].toLowerCase();
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526 |
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527 | switch (scheme) {
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528 | case "https":
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529 | linkage.push({ type: "url", content: avatar });
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530 | return { linkage, url: avatar };
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531 |
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532 | case "data":
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533 | linkage.push({ type: "data", content: avatar });
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534 | return { linkage, url: avatar };
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535 |
|
536 | case "ipfs":
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537 | linkage.push({ type: "ipfs", content: avatar });
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538 | return { linkage, url: getIpfsLink(avatar) };
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539 |
|
540 | case "erc721":
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541 | case "erc1155": {
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542 |
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543 | const selector = (scheme === "erc721") ? "0xc87b56dd": "0x0e89341c";
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544 | linkage.push({ type: scheme, content: avatar });
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545 |
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546 |
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547 | const owner = (this._resolvedAddress || await this.getAddress());
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548 |
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549 | const comps = (match[2] || "").split("/");
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550 | if (comps.length !== 2) { return null; }
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551 |
|
552 | const addr = await this.provider.formatter.address(comps[0]);
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553 | const tokenId = hexZeroPad(BigNumber.from(comps[1]).toHexString(), 32);
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554 |
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555 |
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556 | if (scheme === "erc721") {
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557 |
|
558 | const tokenOwner = this.provider.formatter.callAddress(await this.provider.call({
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559 | to: addr, data: hexConcat([ "0x6352211e", tokenId ])
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560 | }));
|
561 | if (owner !== tokenOwner) { return null; }
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562 | linkage.push({ type: "owner", content: tokenOwner });
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563 |
|
564 | } else if (scheme === "erc1155") {
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565 |
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566 | const balance = BigNumber.from(await this.provider.call({
|
567 | to: addr, data: hexConcat([ "0x00fdd58e", hexZeroPad(owner, 32), tokenId ])
|
568 | }));
|
569 | if (balance.isZero()) { return null; }
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570 | linkage.push({ type: "balance", content: balance.toString() });
|
571 | }
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572 |
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573 |
|
574 | const tx = {
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575 | to: this.provider.formatter.address(comps[0]),
|
576 | data: hexConcat([ selector, tokenId ])
|
577 | };
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578 |
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579 | let metadataUrl = _parseString(await this.provider.call(tx), 0);
|
580 | if (metadataUrl == null) { return null; }
|
581 | linkage.push({ type: "metadata-url-base", content: metadataUrl });
|
582 |
|
583 |
|
584 | if (scheme === "erc1155") {
|
585 | metadataUrl = metadataUrl.replace("{id}", tokenId.substring(2));
|
586 | linkage.push({ type: "metadata-url-expanded", content: metadataUrl });
|
587 | }
|
588 |
|
589 |
|
590 | if (metadataUrl.match(/^ipfs:/i)) {
|
591 | metadataUrl = getIpfsLink(metadataUrl);
|
592 | }
|
593 |
|
594 | linkage.push({ type: "metadata-url", content: metadataUrl });
|
595 |
|
596 |
|
597 | const metadata = await fetchJson(metadataUrl);
|
598 | if (!metadata) { return null; }
|
599 | linkage.push({ type: "metadata", content: JSON.stringify(metadata) });
|
600 |
|
601 |
|
602 | let imageUrl = metadata.image;
|
603 | if (typeof(imageUrl) !== "string") { return null; }
|
604 |
|
605 | if (imageUrl.match(/^(https:\/\/|data:)/i)) {
|
606 |
|
607 | } else {
|
608 |
|
609 | const ipfs = imageUrl.match(matcherIpfs);
|
610 | if (ipfs == null) { return null; }
|
611 |
|
612 | linkage.push({ type: "url-ipfs", content: imageUrl });
|
613 | imageUrl = getIpfsLink(imageUrl);
|
614 | }
|
615 |
|
616 | linkage.push({ type: "url", content: imageUrl });
|
617 |
|
618 | return { linkage, url: imageUrl };
|
619 | }
|
620 | }
|
621 | }
|
622 | } catch (error) { }
|
623 |
|
624 | return null;
|
625 | }
|
626 |
|
627 | async getContentHash(): Promise<string> {
|
628 |
|
629 |
|
630 | const hexBytes = await this._fetchBytes("0xbc1c58d1");
|
631 |
|
632 |
|
633 | if (hexBytes == null || hexBytes === "0x") { return null; }
|
634 |
|
635 |
|
636 | const ipfs = hexBytes.match(/^0xe3010170(([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f]*))$/);
|
637 | if (ipfs) {
|
638 | const length = parseInt(ipfs[3], 16);
|
639 | if (ipfs[4].length === length * 2) {
|
640 | return "ipfs:/\/" + Base58.encode("0x" + ipfs[1]);
|
641 | }
|
642 | }
|
643 |
|
644 |
|
645 | const ipns = hexBytes.match(/^0xe5010172(([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f]*))$/);
|
646 | if (ipns) {
|
647 | const length = parseInt(ipns[3], 16);
|
648 | if (ipns[4].length === length * 2) {
|
649 | return "ipns:/\/" + Base58.encode("0x" + ipns[1]);
|
650 | }
|
651 | }
|
652 |
|
653 |
|
654 | const swarm = hexBytes.match(/^0xe40101fa011b20([0-9a-f]*)$/)
|
655 | if (swarm) {
|
656 | if (swarm[1].length === (32 * 2)) {
|
657 | return "bzz:/\/" + swarm[1]
|
658 | }
|
659 | }
|
660 |
|
661 | const skynet = hexBytes.match(/^0x90b2c605([0-9a-f]*)$/);
|
662 | if (skynet) {
|
663 | if (skynet[1].length === (34 * 2)) {
|
664 |
|
665 | const urlSafe: Record<string, string> = { "=": "", "+": "-", "/": "_" };
|
666 | const hash = base64Encode("0x" + skynet[1]).replace(/[=+\/]/g, (a) => (urlSafe[a]));
|
667 | return "sia:/\/" + hash;
|
668 | }
|
669 | }
|
670 |
|
671 | return logger.throwError(`invalid or unsupported content hash data`, Logger.errors.UNSUPPORTED_OPERATION, {
|
672 | operation: "getContentHash()",
|
673 | data: hexBytes
|
674 | });
|
675 | }
|
676 |
|
677 | async getText(key: string): Promise<string> {
|
678 |
|
679 |
|
680 | let keyBytes = toUtf8Bytes(key);
|
681 |
|
682 |
|
683 |
|
684 | keyBytes = concat([ bytes32ify(64), bytes32ify(keyBytes.length), keyBytes ]);
|
685 |
|
686 |
|
687 | if ((keyBytes.length % 32) !== 0) {
|
688 | keyBytes = concat([ keyBytes, hexZeroPad("0x", 32 - (key.length % 32)) ])
|
689 | }
|
690 |
|
691 | const hexBytes = await this._fetchBytes("0x59d1d43c", hexlify(keyBytes));
|
692 | if (hexBytes == null || hexBytes === "0x") { return null; }
|
693 |
|
694 | return toUtf8String(hexBytes);
|
695 | }
|
696 | }
|
697 |
|
698 | let defaultFormatter: Formatter = null;
|
699 |
|
700 | let nextPollId = 1;
|
701 |
|
702 | export class BaseProvider extends Provider implements EnsProvider {
|
703 | _networkPromise: Promise<Network>;
|
704 | _network: Network;
|
705 |
|
706 | _events: Array<Event>;
|
707 |
|
708 | formatter: Formatter;
|
709 |
|
710 |
|
711 |
|
712 |
|
713 |
|
714 |
|
715 |
|
716 |
|
717 |
|
718 |
|
719 |
|
720 | _emitted: { [ eventName: string ]: number | "pending" };
|
721 |
|
722 | _pollingInterval: number;
|
723 | _poller: NodeJS.Timer;
|
724 | _bootstrapPoll: NodeJS.Timer;
|
725 |
|
726 | _lastBlockNumber: number;
|
727 | _maxFilterBlockRange: number;
|
728 |
|
729 | _fastBlockNumber: number;
|
730 | _fastBlockNumberPromise: Promise<number>;
|
731 | _fastQueryDate: number;
|
732 |
|
733 | _maxInternalBlockNumber: number;
|
734 | _internalBlockNumber: Promise<{ blockNumber: number, reqTime: number, respTime: number }>;
|
735 |
|
736 | readonly anyNetwork: boolean;
|
737 |
|
738 | disableCcipRead: boolean;
|
739 |
|
740 |
|
741 | |
742 |
|
743 |
|
744 |
|
745 |
|
746 |
|
747 |
|
748 |
|
749 |
|
750 |
|
751 | constructor(network: Networkish | Promise<Network>) {
|
752 | super();
|
753 |
|
754 |
|
755 | this._events = [];
|
756 |
|
757 | this._emitted = { block: -2 };
|
758 |
|
759 | this.disableCcipRead = false;
|
760 |
|
761 | this.formatter = new.target.getFormatter();
|
762 |
|
763 |
|
764 |
|
765 |
|
766 | defineReadOnly(this, "anyNetwork", (network === "any"));
|
767 | if (this.anyNetwork) { network = this.detectNetwork(); }
|
768 |
|
769 | if (network instanceof Promise) {
|
770 | this._networkPromise = network;
|
771 |
|
772 |
|
773 | network.catch((error) => { });
|
774 |
|
775 |
|
776 | this._ready().catch((error) => { });
|
777 |
|
778 | } else {
|
779 | const knownNetwork = getStatic<(network: Networkish) => Network>(new.target, "getNetwork")(network);
|
780 | if (knownNetwork) {
|
781 | defineReadOnly(this, "_network", knownNetwork);
|
782 | this.emit("network", knownNetwork, null);
|
783 |
|
784 | } else {
|
785 | logger.throwArgumentError("invalid network", "network", network);
|
786 | }
|
787 | }
|
788 |
|
789 | this._maxInternalBlockNumber = -1024;
|
790 |
|
791 | this._lastBlockNumber = -2;
|
792 | this._maxFilterBlockRange = 10;
|
793 |
|
794 | this._pollingInterval = 4000;
|
795 |
|
796 | this._fastQueryDate = 0;
|
797 | }
|
798 |
|
799 | async _ready(): Promise<Network> {
|
800 | if (this._network == null) {
|
801 | let network: Network = null;
|
802 | if (this._networkPromise) {
|
803 | try {
|
804 | network = await this._networkPromise;
|
805 | } catch (error) { }
|
806 | }
|
807 |
|
808 |
|
809 | if (network == null) {
|
810 | network = await this.detectNetwork();
|
811 | }
|
812 |
|
813 |
|
814 |
|
815 | if (!network) {
|
816 | logger.throwError("no network detected", Logger.errors.UNKNOWN_ERROR, { });
|
817 | }
|
818 |
|
819 |
|
820 | if (this._network == null) {
|
821 | if (this.anyNetwork) {
|
822 | this._network = network;
|
823 | } else {
|
824 | defineReadOnly(this, "_network", network);
|
825 | }
|
826 | this.emit("network", network, null);
|
827 | }
|
828 | }
|
829 |
|
830 | return this._network;
|
831 | }
|
832 |
|
833 |
|
834 |
|
835 |
|
836 | get ready(): Promise<Network> {
|
837 | return poll(() => {
|
838 | return this._ready().then((network) => {
|
839 | return network;
|
840 | }, (error) => {
|
841 |
|
842 | if (error.code === Logger.errors.NETWORK_ERROR && error.event === "noNetwork") {
|
843 | return undefined;
|
844 | }
|
845 | throw error;
|
846 | });
|
847 | });
|
848 | }
|
849 |
|
850 |
|
851 | static getFormatter(): Formatter {
|
852 | if (defaultFormatter == null) {
|
853 | defaultFormatter = new Formatter();
|
854 | }
|
855 | return defaultFormatter;
|
856 | }
|
857 |
|
858 |
|
859 | static getNetwork(network: Networkish): Network {
|
860 | return getNetwork((network == null) ? "homestead": network);
|
861 | }
|
862 |
|
863 | async ccipReadFetch(tx: Transaction, calldata: string, urls: Array<string>): Promise<null | string> {
|
864 | if (this.disableCcipRead || urls.length === 0) { return null; }
|
865 |
|
866 | const sender = tx.to.toLowerCase();
|
867 | const data = calldata.toLowerCase();
|
868 |
|
869 | const errorMessages: Array<string> = [ ];
|
870 |
|
871 | for (let i = 0; i < urls.length; i++) {
|
872 | const url = urls[i];
|
873 |
|
874 |
|
875 | const href = url.replace("{sender}", sender).replace("{data}", data);
|
876 |
|
877 |
|
878 | const json: string | null = (url.indexOf("{data}") >= 0) ? null: JSON.stringify({ data, sender });
|
879 |
|
880 | const result = await fetchJson({ url: href, errorPassThrough: true }, json, (value, response) => {
|
881 | value.status = response.statusCode;
|
882 | return value;
|
883 | });
|
884 |
|
885 | if (result.data) { return result.data; }
|
886 |
|
887 | const errorMessage = (result.message || "unknown error");
|
888 |
|
889 |
|
890 | if (result.status >= 400 && result.status < 500) {
|
891 | return logger.throwError(`response not found during CCIP fetch: ${ errorMessage }`, Logger.errors.SERVER_ERROR, { url, errorMessage });
|
892 | }
|
893 |
|
894 |
|
895 | errorMessages.push(errorMessage);
|
896 | }
|
897 |
|
898 | return logger.throwError(`error encountered during CCIP fetch: ${ errorMessages.map((m) => JSON.stringify(m)).join(", ") }`, Logger.errors.SERVER_ERROR, {
|
899 | urls, errorMessages
|
900 | });
|
901 | }
|
902 |
|
903 |
|
904 |
|
905 | async _getInternalBlockNumber(maxAge: number): Promise<number> {
|
906 | await this._ready();
|
907 |
|
908 |
|
909 | if (maxAge > 0) {
|
910 |
|
911 |
|
912 | while (this._internalBlockNumber) {
|
913 |
|
914 |
|
915 | const internalBlockNumber = this._internalBlockNumber;
|
916 |
|
917 | try {
|
918 |
|
919 | const result = await internalBlockNumber;
|
920 | if ((getTime() - result.respTime) <= maxAge) {
|
921 | return result.blockNumber;
|
922 | }
|
923 |
|
924 |
|
925 | break;
|
926 |
|
927 | } catch(error) {
|
928 |
|
929 |
|
930 |
|
931 |
|
932 |
|
933 | if (this._internalBlockNumber === internalBlockNumber) {
|
934 | break;
|
935 | }
|
936 | }
|
937 | }
|
938 | }
|
939 |
|
940 | const reqTime = getTime();
|
941 |
|
942 | const checkInternalBlockNumber = resolveProperties({
|
943 | blockNumber: this.perform("getBlockNumber", { }),
|
944 | networkError: this.getNetwork().then((network) => (null), (error) => (error))
|
945 | }).then(({ blockNumber, networkError }) => {
|
946 | if (networkError) {
|
947 |
|
948 | if (this._internalBlockNumber === checkInternalBlockNumber) {
|
949 | this._internalBlockNumber = null;
|
950 | }
|
951 | throw networkError;
|
952 | }
|
953 |
|
954 | const respTime = getTime();
|
955 |
|
956 | blockNumber = BigNumber.from(blockNumber).toNumber();
|
957 | if (blockNumber < this._maxInternalBlockNumber) { blockNumber = this._maxInternalBlockNumber; }
|
958 |
|
959 | this._maxInternalBlockNumber = blockNumber;
|
960 | this._setFastBlockNumber(blockNumber);
|
961 | return { blockNumber, reqTime, respTime };
|
962 | });
|
963 |
|
964 | this._internalBlockNumber = checkInternalBlockNumber;
|
965 |
|
966 |
|
967 | checkInternalBlockNumber.catch((error) => {
|
968 |
|
969 | if (this._internalBlockNumber === checkInternalBlockNumber) {
|
970 | this._internalBlockNumber = null;
|
971 | }
|
972 | });
|
973 |
|
974 | return (await checkInternalBlockNumber).blockNumber;
|
975 | }
|
976 |
|
977 | async poll(): Promise<void> {
|
978 | const pollId = nextPollId++;
|
979 |
|
980 |
|
981 | const runners: Array<Promise<void>> = [];
|
982 |
|
983 | let blockNumber: number = null;
|
984 | try {
|
985 | blockNumber = await this._getInternalBlockNumber(100 + this.pollingInterval / 2);
|
986 | } catch (error) {
|
987 | this.emit("error", error);
|
988 | return;
|
989 | }
|
990 | this._setFastBlockNumber(blockNumber);
|
991 |
|
992 |
|
993 | this.emit("poll", pollId, blockNumber);
|
994 |
|
995 |
|
996 | if (blockNumber === this._lastBlockNumber) {
|
997 | this.emit("didPoll", pollId);
|
998 | return;
|
999 | }
|
1000 |
|
1001 |
|
1002 | if (this._emitted.block === -2) {
|
1003 | this._emitted.block = blockNumber - 1;
|
1004 | }
|
1005 |
|
1006 | if (Math.abs((<number>(this._emitted.block)) - blockNumber) > 1000) {
|
1007 | logger.warn(`network block skew detected; skipping block events (emitted=${ this._emitted.block } blockNumber${ blockNumber })`);
|
1008 | this.emit("error", logger.makeError("network block skew detected", Logger.errors.NETWORK_ERROR, {
|
1009 | blockNumber: blockNumber,
|
1010 | event: "blockSkew",
|
1011 | previousBlockNumber: this._emitted.block
|
1012 | }));
|
1013 | this.emit("block", blockNumber);
|
1014 |
|
1015 | } else {
|
1016 |
|
1017 | for (let i = (<number>this._emitted.block) + 1; i <= blockNumber; i++) {
|
1018 | this.emit("block", i);
|
1019 | }
|
1020 | }
|
1021 |
|
1022 |
|
1023 | if ((<number>this._emitted.block) !== blockNumber) {
|
1024 | this._emitted.block = blockNumber;
|
1025 |
|
1026 | Object.keys(this._emitted).forEach((key) => {
|
1027 |
|
1028 | if (key === "block") { return; }
|
1029 |
|
1030 |
|
1031 | const eventBlockNumber = this._emitted[key];
|
1032 |
|
1033 |
|
1034 |
|
1035 |
|
1036 | if (eventBlockNumber === "pending") { return; }
|
1037 |
|
1038 |
|
1039 |
|
1040 | if (blockNumber - eventBlockNumber > 12) {
|
1041 | delete this._emitted[key];
|
1042 | }
|
1043 | });
|
1044 | }
|
1045 |
|
1046 |
|
1047 | if (this._lastBlockNumber === -2) {
|
1048 | this._lastBlockNumber = blockNumber - 1;
|
1049 | }
|
1050 |
|
1051 | this._events.forEach((event) => {
|
1052 | switch (event.type) {
|
1053 | case "tx": {
|
1054 | const hash = event.hash;
|
1055 | let runner = this.getTransactionReceipt(hash).then((receipt) => {
|
1056 | if (!receipt || receipt.blockNumber == null) { return null; }
|
1057 | this._emitted["t:" + hash] = receipt.blockNumber;
|
1058 | this.emit(hash, receipt);
|
1059 | return null;
|
1060 | }).catch((error: Error) => { this.emit("error", error); });
|
1061 |
|
1062 | runners.push(runner);
|
1063 |
|
1064 | break;
|
1065 | }
|
1066 |
|
1067 | case "filter": {
|
1068 |
|
1069 | if (!event._inflight) {
|
1070 | event._inflight = true;
|
1071 |
|
1072 |
|
1073 |
|
1074 |
|
1075 |
|
1076 | const filter = event.filter;
|
1077 | filter.fromBlock = event._lastBlockNumber + 1;
|
1078 | filter.toBlock = blockNumber;
|
1079 |
|
1080 |
|
1081 | if (filter.toBlock - this._maxFilterBlockRange > filter.fromBlock) {
|
1082 | filter.fromBlock = filter.toBlock - this._maxFilterBlockRange;
|
1083 | }
|
1084 |
|
1085 | const runner = this.getLogs(filter).then((logs) => {
|
1086 |
|
1087 | event._inflight = false;
|
1088 |
|
1089 | if (logs.length === 0) { return; }
|
1090 |
|
1091 | logs.forEach((log: Log) => {
|
1092 |
|
1093 |
|
1094 | if (log.blockNumber > event._lastBlockNumber) {
|
1095 | event._lastBlockNumber = log.blockNumber;
|
1096 | }
|
1097 |
|
1098 |
|
1099 | this._emitted["b:" + log.blockHash] = log.blockNumber;
|
1100 | this._emitted["t:" + log.transactionHash] = log.blockNumber;
|
1101 |
|
1102 | this.emit(filter, log);
|
1103 | });
|
1104 | }).catch((error: Error) => {
|
1105 | this.emit("error", error);
|
1106 |
|
1107 |
|
1108 | event._inflight = false;
|
1109 | });
|
1110 | runners.push(runner);
|
1111 | }
|
1112 |
|
1113 | break;
|
1114 | }
|
1115 | }
|
1116 | });
|
1117 |
|
1118 | this._lastBlockNumber = blockNumber;
|
1119 |
|
1120 |
|
1121 | Promise.all(runners).then(() => {
|
1122 | this.emit("didPoll", pollId);
|
1123 | }).catch((error) => { this.emit("error", error); });
|
1124 |
|
1125 | return;
|
1126 | }
|
1127 |
|
1128 |
|
1129 | resetEventsBlock(blockNumber: number): void {
|
1130 | this._lastBlockNumber = blockNumber - 1;
|
1131 | if (this.polling) { this.poll(); }
|
1132 | }
|
1133 |
|
1134 | get network(): Network {
|
1135 | return this._network;
|
1136 | }
|
1137 |
|
1138 |
|
1139 |
|
1140 | async detectNetwork(): Promise<Network> {
|
1141 | return logger.throwError("provider does not support network detection", Logger.errors.UNSUPPORTED_OPERATION, {
|
1142 | operation: "provider.detectNetwork"
|
1143 | });
|
1144 | }
|
1145 |
|
1146 | async getNetwork(): Promise<Network> {
|
1147 | const network = await this._ready();
|
1148 |
|
1149 |
|
1150 |
|
1151 |
|
1152 | const currentNetwork = await this.detectNetwork();
|
1153 | if (network.chainId !== currentNetwork.chainId) {
|
1154 |
|
1155 |
|
1156 |
|
1157 | if (this.anyNetwork) {
|
1158 | this._network = currentNetwork;
|
1159 |
|
1160 |
|
1161 | this._lastBlockNumber = -2;
|
1162 | this._fastBlockNumber = null;
|
1163 | this._fastBlockNumberPromise = null;
|
1164 | this._fastQueryDate = 0;
|
1165 | this._emitted.block = -2;
|
1166 | this._maxInternalBlockNumber = -1024;
|
1167 | this._internalBlockNumber = null;
|
1168 |
|
1169 |
|
1170 |
|
1171 |
|
1172 | this.emit("network", currentNetwork, network);
|
1173 | await stall(0);
|
1174 |
|
1175 | return this._network;
|
1176 | }
|
1177 |
|
1178 | const error = logger.makeError("underlying network changed", Logger.errors.NETWORK_ERROR, {
|
1179 | event: "changed",
|
1180 | network: network,
|
1181 | detectedNetwork: currentNetwork
|
1182 | });
|
1183 |
|
1184 | this.emit("error", error);
|
1185 | throw error;
|
1186 | }
|
1187 |
|
1188 | return network;
|
1189 | }
|
1190 |
|
1191 | get blockNumber(): number {
|
1192 | this._getInternalBlockNumber(100 + this.pollingInterval / 2).then((blockNumber) => {
|
1193 | this._setFastBlockNumber(blockNumber);
|
1194 | }, (error) => { });
|
1195 |
|
1196 | return (this._fastBlockNumber != null) ? this._fastBlockNumber: -1;
|
1197 | }
|
1198 |
|
1199 | get polling(): boolean {
|
1200 | return (this._poller != null);
|
1201 | }
|
1202 |
|
1203 | set polling(value: boolean) {
|
1204 | if (value && !this._poller) {
|
1205 | this._poller = setInterval(() => { this.poll(); }, this.pollingInterval);
|
1206 |
|
1207 | if (!this._bootstrapPoll) {
|
1208 | this._bootstrapPoll = setTimeout(() => {
|
1209 | this.poll();
|
1210 |
|
1211 |
|
1212 |
|
1213 | this._bootstrapPoll = setTimeout(() => {
|
1214 |
|
1215 |
|
1216 | if (!this._poller) { this.poll(); }
|
1217 |
|
1218 |
|
1219 | this._bootstrapPoll = null;
|
1220 | }, this.pollingInterval);
|
1221 | }, 0);
|
1222 | }
|
1223 |
|
1224 | } else if (!value && this._poller) {
|
1225 | clearInterval(this._poller);
|
1226 | this._poller = null;
|
1227 | }
|
1228 | }
|
1229 |
|
1230 | get pollingInterval(): number {
|
1231 | return this._pollingInterval;
|
1232 | }
|
1233 |
|
1234 | set pollingInterval(value: number) {
|
1235 | if (typeof(value) !== "number" || value <= 0 || parseInt(String(value)) != value) {
|
1236 | throw new Error("invalid polling interval");
|
1237 | }
|
1238 |
|
1239 | this._pollingInterval = value;
|
1240 |
|
1241 | if (this._poller) {
|
1242 | clearInterval(this._poller);
|
1243 | this._poller = setInterval(() => { this.poll(); }, this._pollingInterval);
|
1244 | }
|
1245 | }
|
1246 |
|
1247 | _getFastBlockNumber(): Promise<number> {
|
1248 | const now = getTime();
|
1249 |
|
1250 |
|
1251 | if ((now - this._fastQueryDate) > 2 * this._pollingInterval) {
|
1252 | this._fastQueryDate = now;
|
1253 | this._fastBlockNumberPromise = this.getBlockNumber().then((blockNumber) => {
|
1254 | if (this._fastBlockNumber == null || blockNumber > this._fastBlockNumber) {
|
1255 | this._fastBlockNumber = blockNumber;
|
1256 | }
|
1257 | return this._fastBlockNumber;
|
1258 | });
|
1259 | }
|
1260 |
|
1261 | return this._fastBlockNumberPromise;
|
1262 | }
|
1263 |
|
1264 | _setFastBlockNumber(blockNumber: number): void {
|
1265 |
|
1266 | if (this._fastBlockNumber != null && blockNumber < this._fastBlockNumber) { return; }
|
1267 |
|
1268 |
|
1269 | this._fastQueryDate = getTime();
|
1270 |
|
1271 |
|
1272 | if (this._fastBlockNumber == null || blockNumber > this._fastBlockNumber) {
|
1273 | this._fastBlockNumber = blockNumber;
|
1274 | this._fastBlockNumberPromise = Promise.resolve(blockNumber);
|
1275 | }
|
1276 | }
|
1277 |
|
1278 | async waitForTransaction(transactionHash: string, confirmations?: number, timeout?: number): Promise<TransactionReceipt> {
|
1279 | return this._waitForTransaction(transactionHash, (confirmations == null) ? 1: confirmations, timeout || 0, null);
|
1280 | }
|
1281 |
|
1282 | async _waitForTransaction(transactionHash: string, confirmations: number, timeout: number, replaceable: { data: string, from: string, nonce: number, to: string, value: BigNumber, startBlock: number }): Promise<TransactionReceipt> {
|
1283 | const receipt = await this.getTransactionReceipt(transactionHash);
|
1284 |
|
1285 |
|
1286 | if ((receipt ? receipt.confirmations: 0) >= confirmations) { return receipt; }
|
1287 |
|
1288 |
|
1289 | return new Promise((resolve, reject) => {
|
1290 | const cancelFuncs: Array<() => void> = [];
|
1291 |
|
1292 | let done = false;
|
1293 | const alreadyDone = function() {
|
1294 | if (done) { return true; }
|
1295 | done = true;
|
1296 | cancelFuncs.forEach((func) => { func(); });
|
1297 | return false;
|
1298 | };
|
1299 |
|
1300 | const minedHandler = (receipt: TransactionReceipt) => {
|
1301 | if (receipt.confirmations < confirmations) { return; }
|
1302 | if (alreadyDone()) { return; }
|
1303 | resolve(receipt);
|
1304 | }
|
1305 | this.on(transactionHash, minedHandler);
|
1306 | cancelFuncs.push(() => { this.removeListener(transactionHash, minedHandler); });
|
1307 |
|
1308 | if (replaceable) {
|
1309 | let lastBlockNumber = replaceable.startBlock;
|
1310 | let scannedBlock: number = null;
|
1311 | const replaceHandler = async (blockNumber: number) => {
|
1312 | if (done) { return; }
|
1313 |
|
1314 |
|
1315 |
|
1316 |
|
1317 | await stall(1000);
|
1318 |
|
1319 | this.getTransactionCount(replaceable.from).then(async (nonce) => {
|
1320 | if (done) { return; }
|
1321 |
|
1322 | if (nonce <= replaceable.nonce) {
|
1323 | lastBlockNumber = blockNumber;
|
1324 |
|
1325 | } else {
|
1326 |
|
1327 | {
|
1328 | const mined = await this.getTransaction(transactionHash);
|
1329 | if (mined && mined.blockNumber != null) { return; }
|
1330 | }
|
1331 |
|
1332 |
|
1333 |
|
1334 |
|
1335 |
|
1336 | if (scannedBlock == null) {
|
1337 | scannedBlock = lastBlockNumber - 3;
|
1338 | if (scannedBlock < replaceable.startBlock) {
|
1339 | scannedBlock = replaceable.startBlock;
|
1340 | }
|
1341 | }
|
1342 |
|
1343 | while (scannedBlock <= blockNumber) {
|
1344 | if (done) { return; }
|
1345 |
|
1346 | const block = await this.getBlockWithTransactions(scannedBlock);
|
1347 | for (let ti = 0; ti < block.transactions.length; ti++) {
|
1348 | const tx = block.transactions[ti];
|
1349 |
|
1350 |
|
1351 | if (tx.hash === transactionHash) { return; }
|
1352 |
|
1353 |
|
1354 | if (tx.from === replaceable.from && tx.nonce === replaceable.nonce) {
|
1355 | if (done) { return; }
|
1356 |
|
1357 |
|
1358 | const receipt = await this.waitForTransaction(tx.hash, confirmations);
|
1359 |
|
1360 |
|
1361 | if (alreadyDone()) { return; }
|
1362 |
|
1363 |
|
1364 | let reason = "replaced";
|
1365 | if (tx.data === replaceable.data && tx.to === replaceable.to && tx.value.eq(replaceable.value)) {
|
1366 | reason = "repriced";
|
1367 | } else if (tx.data === "0x" && tx.from === tx.to && tx.value.isZero()) {
|
1368 | reason = "cancelled"
|
1369 | }
|
1370 |
|
1371 |
|
1372 | reject(logger.makeError("transaction was replaced", Logger.errors.TRANSACTION_REPLACED, {
|
1373 | cancelled: (reason === "replaced" || reason === "cancelled"),
|
1374 | reason,
|
1375 | replacement: this._wrapTransaction(tx),
|
1376 | hash: transactionHash,
|
1377 | receipt
|
1378 | }));
|
1379 |
|
1380 | return;
|
1381 | }
|
1382 | }
|
1383 | scannedBlock++;
|
1384 | }
|
1385 | }
|
1386 |
|
1387 | if (done) { return; }
|
1388 | this.once("block", replaceHandler);
|
1389 |
|
1390 | }, (error) => {
|
1391 | if (done) { return; }
|
1392 | this.once("block", replaceHandler);
|
1393 | });
|
1394 | };
|
1395 |
|
1396 | if (done) { return; }
|
1397 | this.once("block", replaceHandler);
|
1398 |
|
1399 | cancelFuncs.push(() => {
|
1400 | this.removeListener("block", replaceHandler);
|
1401 | });
|
1402 | }
|
1403 |
|
1404 | if (typeof(timeout) === "number" && timeout > 0) {
|
1405 | const timer = setTimeout(() => {
|
1406 | if (alreadyDone()) { return; }
|
1407 | reject(logger.makeError("timeout exceeded", Logger.errors.TIMEOUT, { timeout: timeout }));
|
1408 | }, timeout);
|
1409 | if (timer.unref) { timer.unref(); }
|
1410 |
|
1411 | cancelFuncs.push(() => { clearTimeout(timer); });
|
1412 | }
|
1413 | });
|
1414 | }
|
1415 |
|
1416 | async getBlockNumber(): Promise<number> {
|
1417 | return this._getInternalBlockNumber(0);
|
1418 | }
|
1419 |
|
1420 | async getGasPrice(): Promise<BigNumber> {
|
1421 | await this.getNetwork();
|
1422 |
|
1423 | const result = await this.perform("getGasPrice", { });
|
1424 | try {
|
1425 | return BigNumber.from(result);
|
1426 | } catch (error) {
|
1427 | return logger.throwError("bad result from backend", Logger.errors.SERVER_ERROR, {
|
1428 | method: "getGasPrice",
|
1429 | result, error
|
1430 | });
|
1431 | }
|
1432 | }
|
1433 |
|
1434 | async getBalance(addressOrName: string | Promise<string>, blockTag?: BlockTag | Promise<BlockTag>): Promise<BigNumber> {
|
1435 | await this.getNetwork();
|
1436 | const params = await resolveProperties({
|
1437 | address: this._getAddress(addressOrName),
|
1438 | blockTag: this._getBlockTag(blockTag)
|
1439 | });
|
1440 |
|
1441 | const result = await this.perform("getBalance", params);
|
1442 | try {
|
1443 | return BigNumber.from(result);
|
1444 | } catch (error) {
|
1445 | return logger.throwError("bad result from backend", Logger.errors.SERVER_ERROR, {
|
1446 | method: "getBalance",
|
1447 | params, result, error
|
1448 | });
|
1449 | }
|
1450 | }
|
1451 |
|
1452 | async getTransactionCount(addressOrName: string | Promise<string>, blockTag?: BlockTag | Promise<BlockTag>): Promise<number> {
|
1453 | await this.getNetwork();
|
1454 | const params = await resolveProperties({
|
1455 | address: this._getAddress(addressOrName),
|
1456 | blockTag: this._getBlockTag(blockTag)
|
1457 | });
|
1458 |
|
1459 | const result = await this.perform("getTransactionCount", params);
|
1460 | try {
|
1461 | return BigNumber.from(result).toNumber();
|
1462 | } catch (error) {
|
1463 | return logger.throwError("bad result from backend", Logger.errors.SERVER_ERROR, {
|
1464 | method: "getTransactionCount",
|
1465 | params, result, error
|
1466 | });
|
1467 | }
|
1468 | }
|
1469 |
|
1470 | async getCode(addressOrName: string | Promise<string>, blockTag?: BlockTag | Promise<BlockTag>): Promise<string> {
|
1471 | await this.getNetwork();
|
1472 | const params = await resolveProperties({
|
1473 | address: this._getAddress(addressOrName),
|
1474 | blockTag: this._getBlockTag(blockTag)
|
1475 | });
|
1476 |
|
1477 | const result = await this.perform("getCode", params);
|
1478 | try {
|
1479 | return hexlify(result);
|
1480 | } catch (error) {
|
1481 | return logger.throwError("bad result from backend", Logger.errors.SERVER_ERROR, {
|
1482 | method: "getCode",
|
1483 | params, result, error
|
1484 | });
|
1485 | }
|
1486 | }
|
1487 |
|
1488 | async getStorageAt(addressOrName: string | Promise<string>, position: BigNumberish | Promise<BigNumberish>, blockTag?: BlockTag | Promise<BlockTag>): Promise<string> {
|
1489 | await this.getNetwork();
|
1490 | const params = await resolveProperties({
|
1491 | address: this._getAddress(addressOrName),
|
1492 | blockTag: this._getBlockTag(blockTag),
|
1493 | position: Promise.resolve(position).then((p) => hexValue(p))
|
1494 | });
|
1495 | const result = await this.perform("getStorageAt", params);
|
1496 | try {
|
1497 | return hexlify(result);
|
1498 | } catch (error) {
|
1499 | return logger.throwError("bad result from backend", Logger.errors.SERVER_ERROR, {
|
1500 | method: "getStorageAt",
|
1501 | params, result, error
|
1502 | });
|
1503 | }
|
1504 | }
|
1505 |
|
1506 |
|
1507 | _wrapTransaction(tx: Transaction, hash?: string, startBlock?: number): TransactionResponse {
|
1508 | if (hash != null && hexDataLength(hash) !== 32) { throw new Error("invalid response - sendTransaction"); }
|
1509 |
|
1510 | const result = <TransactionResponse>tx;
|
1511 |
|
1512 |
|
1513 | if (hash != null && tx.hash !== hash) {
|
1514 | logger.throwError("Transaction hash mismatch from Provider.sendTransaction.", Logger.errors.UNKNOWN_ERROR, { expectedHash: tx.hash, returnedHash: hash });
|
1515 | }
|
1516 |
|
1517 | result.wait = async (confirms?: number, timeout?: number) => {
|
1518 | if (confirms == null) { confirms = 1; }
|
1519 | if (timeout == null) { timeout = 0; }
|
1520 |
|
1521 |
|
1522 | let replacement = undefined;
|
1523 | if (confirms !== 0 && startBlock != null) {
|
1524 | replacement = {
|
1525 | data: tx.data,
|
1526 | from: tx.from,
|
1527 | nonce: tx.nonce,
|
1528 | to: tx.to,
|
1529 | value: tx.value,
|
1530 | startBlock
|
1531 | };
|
1532 | }
|
1533 |
|
1534 | const receipt = await this._waitForTransaction(tx.hash, confirms, timeout, replacement);
|
1535 | if (receipt == null && confirms === 0) { return null; }
|
1536 |
|
1537 |
|
1538 | this._emitted["t:" + tx.hash] = receipt.blockNumber;
|
1539 |
|
1540 | if (receipt.status === 0) {
|
1541 | logger.throwError("transaction failed", Logger.errors.CALL_EXCEPTION, {
|
1542 | transactionHash: tx.hash,
|
1543 | transaction: tx,
|
1544 | receipt: receipt
|
1545 | });
|
1546 | }
|
1547 | return receipt;
|
1548 | };
|
1549 |
|
1550 | return result;
|
1551 | }
|
1552 |
|
1553 | async sendTransaction(signedTransaction: string | Promise<string>): Promise<TransactionResponse> {
|
1554 | await this.getNetwork();
|
1555 | const hexTx = await Promise.resolve(signedTransaction).then(t => hexlify(t));
|
1556 | const tx = this.formatter.transaction(signedTransaction);
|
1557 | if (tx.confirmations == null) { tx.confirmations = 0; }
|
1558 | const blockNumber = await this._getInternalBlockNumber(100 + 2 * this.pollingInterval);
|
1559 | try {
|
1560 | const hash = await this.perform("sendTransaction", { signedTransaction: hexTx });
|
1561 | return this._wrapTransaction(tx, hash, blockNumber);
|
1562 | } catch (error) {
|
1563 | (<any>error).transaction = tx;
|
1564 | (<any>error).transactionHash = tx.hash;
|
1565 | throw error;
|
1566 | }
|
1567 | }
|
1568 |
|
1569 | async _getTransactionRequest(transaction: Deferrable<TransactionRequest>): Promise<Transaction> {
|
1570 | const values: any = await transaction;
|
1571 |
|
1572 | const tx: any = { };
|
1573 |
|
1574 | ["from", "to"].forEach((key) => {
|
1575 | if (values[key] == null) { return; }
|
1576 | tx[key] = Promise.resolve(values[key]).then((v) => (v ? this._getAddress(v): null))
|
1577 | });
|
1578 |
|
1579 | ["gasLimit", "gasPrice", "maxFeePerGas", "maxPriorityFeePerGas", "value"].forEach((key) => {
|
1580 | if (values[key] == null) { return; }
|
1581 | tx[key] = Promise.resolve(values[key]).then((v) => (v ? BigNumber.from(v): null));
|
1582 | });
|
1583 |
|
1584 | ["type"].forEach((key) => {
|
1585 | if (values[key] == null) { return; }
|
1586 | tx[key] = Promise.resolve(values[key]).then((v) => ((v != null) ? v: null));
|
1587 | });
|
1588 |
|
1589 | if (values.accessList) {
|
1590 | tx.accessList = this.formatter.accessList(values.accessList);
|
1591 | }
|
1592 |
|
1593 | ["data"].forEach((key) => {
|
1594 | if (values[key] == null) { return; }
|
1595 | tx[key] = Promise.resolve(values[key]).then((v) => (v ? hexlify(v): null));
|
1596 | });
|
1597 |
|
1598 | return this.formatter.transactionRequest(await resolveProperties(tx));
|
1599 | }
|
1600 |
|
1601 | async _getFilter(filter: Filter | FilterByBlockHash | Promise<Filter | FilterByBlockHash>): Promise<Filter | FilterByBlockHash> {
|
1602 | filter = await filter;
|
1603 |
|
1604 | const result: any = { };
|
1605 |
|
1606 | if (filter.address != null) {
|
1607 | result.address = this._getAddress(filter.address);
|
1608 | }
|
1609 |
|
1610 | ["blockHash", "topics"].forEach((key) => {
|
1611 | if ((<any>filter)[key] == null) { return; }
|
1612 | result[key] = (<any>filter)[key];
|
1613 | });
|
1614 |
|
1615 | ["fromBlock", "toBlock"].forEach((key) => {
|
1616 | if ((<any>filter)[key] == null) { return; }
|
1617 | result[key] = this._getBlockTag((<any>filter)[key]);
|
1618 | });
|
1619 |
|
1620 | return this.formatter.filter(await resolveProperties(result));
|
1621 | }
|
1622 |
|
1623 | async _call(transaction: TransactionRequest, blockTag: BlockTag, attempt: number): Promise<string> {
|
1624 | if (attempt >= MAX_CCIP_REDIRECTS) {
|
1625 | logger.throwError("CCIP read exceeded maximum redirections", Logger.errors.SERVER_ERROR, {
|
1626 | redirects: attempt, transaction
|
1627 | });
|
1628 | }
|
1629 |
|
1630 | const txSender = transaction.to;
|
1631 |
|
1632 | const result = await this.perform("call", { transaction, blockTag });
|
1633 |
|
1634 |
|
1635 | if (attempt >= 0 && blockTag === "latest" && txSender != null && result.substring(0, 10) === "0x556f1830" && (hexDataLength(result) % 32 === 4)) {
|
1636 | try {
|
1637 | const data = hexDataSlice(result, 4);
|
1638 |
|
1639 |
|
1640 | const sender = hexDataSlice(data, 0, 32);
|
1641 | if (!BigNumber.from(sender).eq(txSender)) {
|
1642 | logger.throwError("CCIP Read sender did not match", Logger.errors.CALL_EXCEPTION, {
|
1643 | name: "OffchainLookup",
|
1644 | signature: "OffchainLookup(address,string[],bytes,bytes4,bytes)",
|
1645 | transaction, data: result
|
1646 | });
|
1647 | }
|
1648 |
|
1649 |
|
1650 | const urls: Array<string> = [];
|
1651 | const urlsOffset = BigNumber.from(hexDataSlice(data, 32, 64)).toNumber();
|
1652 | const urlsLength = BigNumber.from(hexDataSlice(data, urlsOffset, urlsOffset + 32)).toNumber();
|
1653 | const urlsData = hexDataSlice(data, urlsOffset + 32);
|
1654 | for (let u = 0; u < urlsLength; u++) {
|
1655 | const url = _parseString(urlsData, u * 32);
|
1656 | if (url == null) {
|
1657 | logger.throwError("CCIP Read contained corrupt URL string", Logger.errors.CALL_EXCEPTION, {
|
1658 | name: "OffchainLookup",
|
1659 | signature: "OffchainLookup(address,string[],bytes,bytes4,bytes)",
|
1660 | transaction, data: result
|
1661 | });
|
1662 | }
|
1663 | urls.push(url);
|
1664 | }
|
1665 |
|
1666 |
|
1667 | const calldata = _parseBytes(data, 64);
|
1668 |
|
1669 |
|
1670 | if (!BigNumber.from(hexDataSlice(data, 100, 128)).isZero()) {
|
1671 | logger.throwError("CCIP Read callback selector included junk", Logger.errors.CALL_EXCEPTION, {
|
1672 | name: "OffchainLookup",
|
1673 | signature: "OffchainLookup(address,string[],bytes,bytes4,bytes)",
|
1674 | transaction, data: result
|
1675 | });
|
1676 | }
|
1677 | const callbackSelector = hexDataSlice(data, 96, 100);
|
1678 |
|
1679 |
|
1680 | const extraData = _parseBytes(data, 128);
|
1681 |
|
1682 | const ccipResult = await this.ccipReadFetch(<Transaction>transaction, calldata, urls);
|
1683 | if (ccipResult == null) {
|
1684 | logger.throwError("CCIP Read disabled or provided no URLs", Logger.errors.CALL_EXCEPTION, {
|
1685 | name: "OffchainLookup",
|
1686 | signature: "OffchainLookup(address,string[],bytes,bytes4,bytes)",
|
1687 | transaction, data: result
|
1688 | });
|
1689 | }
|
1690 |
|
1691 | const tx = {
|
1692 | to: txSender,
|
1693 | data: hexConcat([ callbackSelector, encodeBytes([ ccipResult, extraData ]) ])
|
1694 | };
|
1695 |
|
1696 | return this._call(tx, blockTag, attempt + 1);
|
1697 |
|
1698 | } catch (error) {
|
1699 | if (error.code === Logger.errors.SERVER_ERROR) { throw error; }
|
1700 | }
|
1701 | }
|
1702 |
|
1703 | try {
|
1704 | return hexlify(result);
|
1705 | } catch (error) {
|
1706 | return logger.throwError("bad result from backend", Logger.errors.SERVER_ERROR, {
|
1707 | method: "call",
|
1708 | params: { transaction, blockTag }, result, error
|
1709 | });
|
1710 | }
|
1711 |
|
1712 | }
|
1713 |
|
1714 | async call(transaction: Deferrable<TransactionRequest>, blockTag?: BlockTag | Promise<BlockTag>): Promise<string> {
|
1715 | await this.getNetwork();
|
1716 | const resolved = await resolveProperties({
|
1717 | transaction: this._getTransactionRequest(transaction),
|
1718 | blockTag: this._getBlockTag(blockTag),
|
1719 | ccipReadEnabled: Promise.resolve(transaction.ccipReadEnabled)
|
1720 | });
|
1721 | return this._call(resolved.transaction, resolved.blockTag, resolved.ccipReadEnabled ? 0: -1);
|
1722 | }
|
1723 |
|
1724 | async estimateGas(transaction: Deferrable<TransactionRequest>): Promise<BigNumber> {
|
1725 | await this.getNetwork();
|
1726 | const params = await resolveProperties({
|
1727 | transaction: this._getTransactionRequest(transaction)
|
1728 | });
|
1729 |
|
1730 | const result = await this.perform("estimateGas", params);
|
1731 | try {
|
1732 | return BigNumber.from(result);
|
1733 | } catch (error) {
|
1734 | return logger.throwError("bad result from backend", Logger.errors.SERVER_ERROR, {
|
1735 | method: "estimateGas",
|
1736 | params, result, error
|
1737 | });
|
1738 | }
|
1739 | }
|
1740 |
|
1741 | async _getAddress(addressOrName: string | Promise<string>): Promise<string> {
|
1742 | addressOrName = await addressOrName;
|
1743 | if (typeof(addressOrName) !== "string") {
|
1744 | logger.throwArgumentError("invalid address or ENS name", "name", addressOrName);
|
1745 | }
|
1746 |
|
1747 | const address = await this.resolveName(addressOrName);
|
1748 | if (address == null) {
|
1749 | logger.throwError("ENS name not configured", Logger.errors.UNSUPPORTED_OPERATION, {
|
1750 | operation: `resolveName(${ JSON.stringify(addressOrName) })`
|
1751 | });
|
1752 | }
|
1753 | return address;
|
1754 | }
|
1755 |
|
1756 | async _getBlock(blockHashOrBlockTag: BlockTag | string | Promise<BlockTag | string>, includeTransactions?: boolean): Promise<Block | BlockWithTransactions> {
|
1757 | await this.getNetwork();
|
1758 |
|
1759 | blockHashOrBlockTag = await blockHashOrBlockTag;
|
1760 |
|
1761 |
|
1762 | let blockNumber = -128;
|
1763 |
|
1764 | const params: { [key: string]: any } = {
|
1765 | includeTransactions: !!includeTransactions
|
1766 | };
|
1767 |
|
1768 | if (isHexString(blockHashOrBlockTag, 32)) {
|
1769 | params.blockHash = blockHashOrBlockTag;
|
1770 | } else {
|
1771 | try {
|
1772 | params.blockTag = await this._getBlockTag(blockHashOrBlockTag);
|
1773 | if (isHexString(params.blockTag)) {
|
1774 | blockNumber = parseInt(params.blockTag.substring(2), 16);
|
1775 | }
|
1776 | } catch (error) {
|
1777 | logger.throwArgumentError("invalid block hash or block tag", "blockHashOrBlockTag", blockHashOrBlockTag);
|
1778 | }
|
1779 | }
|
1780 |
|
1781 | return poll(async () => {
|
1782 | const block = await this.perform("getBlock", params);
|
1783 |
|
1784 |
|
1785 | if (block == null) {
|
1786 |
|
1787 |
|
1788 |
|
1789 |
|
1790 | if (params.blockHash != null) {
|
1791 | if (this._emitted["b:" + params.blockHash] == null) { return null; }
|
1792 | }
|
1793 |
|
1794 |
|
1795 | if (params.blockTag != null) {
|
1796 | if (blockNumber > this._emitted.block) { return null; }
|
1797 | }
|
1798 |
|
1799 |
|
1800 | return undefined;
|
1801 | }
|
1802 |
|
1803 |
|
1804 | if (includeTransactions) {
|
1805 | let blockNumber: number = null;
|
1806 | for (let i = 0; i < block.transactions.length; i++) {
|
1807 | const tx = block.transactions[i];
|
1808 | if (tx.blockNumber == null) {
|
1809 | tx.confirmations = 0;
|
1810 |
|
1811 | } else if (tx.confirmations == null) {
|
1812 | if (blockNumber == null) {
|
1813 | blockNumber = await this._getInternalBlockNumber(100 + 2 * this.pollingInterval);
|
1814 | }
|
1815 |
|
1816 |
|
1817 | let confirmations = (blockNumber - tx.blockNumber) + 1;
|
1818 | if (confirmations <= 0) { confirmations = 1; }
|
1819 | tx.confirmations = confirmations;
|
1820 | }
|
1821 | }
|
1822 |
|
1823 | const blockWithTxs: any = this.formatter.blockWithTransactions(block);
|
1824 | blockWithTxs.transactions = blockWithTxs.transactions.map((tx: TransactionResponse) => this._wrapTransaction(tx));
|
1825 | return blockWithTxs;
|
1826 | }
|
1827 |
|
1828 | return this.formatter.block(block);
|
1829 |
|
1830 | }, { oncePoll: this });
|
1831 | }
|
1832 |
|
1833 | getBlock(blockHashOrBlockTag: BlockTag | string | Promise<BlockTag | string>): Promise<Block> {
|
1834 | return <Promise<Block>>(this._getBlock(blockHashOrBlockTag, false));
|
1835 | }
|
1836 |
|
1837 | getBlockWithTransactions(blockHashOrBlockTag: BlockTag | string | Promise<BlockTag | string>): Promise<BlockWithTransactions> {
|
1838 | return <Promise<BlockWithTransactions>>(this._getBlock(blockHashOrBlockTag, true));
|
1839 | }
|
1840 |
|
1841 | async getTransaction(transactionHash: string | Promise<string>): Promise<TransactionResponse> {
|
1842 | await this.getNetwork();
|
1843 | transactionHash = await transactionHash;
|
1844 |
|
1845 | const params = { transactionHash: this.formatter.hash(transactionHash, true) };
|
1846 |
|
1847 | return poll(async () => {
|
1848 | const result = await this.perform("getTransaction", params);
|
1849 |
|
1850 | if (result == null) {
|
1851 | if (this._emitted["t:" + transactionHash] == null) {
|
1852 | return null;
|
1853 | }
|
1854 | return undefined;
|
1855 | }
|
1856 |
|
1857 | const tx = this.formatter.transactionResponse(result);
|
1858 |
|
1859 | if (tx.blockNumber == null) {
|
1860 | tx.confirmations = 0;
|
1861 |
|
1862 | } else if (tx.confirmations == null) {
|
1863 | const blockNumber = await this._getInternalBlockNumber(100 + 2 * this.pollingInterval);
|
1864 |
|
1865 |
|
1866 | let confirmations = (blockNumber - tx.blockNumber) + 1;
|
1867 | if (confirmations <= 0) { confirmations = 1; }
|
1868 | tx.confirmations = confirmations;
|
1869 | }
|
1870 |
|
1871 | return this._wrapTransaction(tx);
|
1872 | }, { oncePoll: this });
|
1873 | }
|
1874 |
|
1875 | async getTransactionReceipt(transactionHash: string | Promise<string>): Promise<TransactionReceipt> {
|
1876 | await this.getNetwork();
|
1877 |
|
1878 | transactionHash = await transactionHash;
|
1879 |
|
1880 | const params = { transactionHash: this.formatter.hash(transactionHash, true) };
|
1881 |
|
1882 | return poll(async () => {
|
1883 | const result = await this.perform("getTransactionReceipt", params);
|
1884 |
|
1885 | if (result == null) {
|
1886 | if (this._emitted["t:" + transactionHash] == null) {
|
1887 | return null;
|
1888 | }
|
1889 | return undefined;
|
1890 | }
|
1891 |
|
1892 |
|
1893 | if (result.blockHash == null) { return undefined; }
|
1894 |
|
1895 | const receipt = this.formatter.receipt(result);
|
1896 |
|
1897 | if (receipt.blockNumber == null) {
|
1898 | receipt.confirmations = 0;
|
1899 |
|
1900 | } else if (receipt.confirmations == null) {
|
1901 | const blockNumber = await this._getInternalBlockNumber(100 + 2 * this.pollingInterval);
|
1902 |
|
1903 |
|
1904 | let confirmations = (blockNumber - receipt.blockNumber) + 1;
|
1905 | if (confirmations <= 0) { confirmations = 1; }
|
1906 | receipt.confirmations = confirmations;
|
1907 | }
|
1908 |
|
1909 | return receipt;
|
1910 | }, { oncePoll: this });
|
1911 | }
|
1912 |
|
1913 | async getLogs(filter: Filter | FilterByBlockHash | Promise<Filter | FilterByBlockHash>): Promise<Array<Log>> {
|
1914 | await this.getNetwork();
|
1915 | const params = await resolveProperties({ filter: this._getFilter(filter) });
|
1916 | const logs: Array<Log> = await this.perform("getLogs", params);
|
1917 | logs.forEach((log) => {
|
1918 | if (log.removed == null) { log.removed = false; }
|
1919 | });
|
1920 | return Formatter.arrayOf(this.formatter.filterLog.bind(this.formatter))(logs);
|
1921 | }
|
1922 |
|
1923 | async getEtherPrice(): Promise<number> {
|
1924 | await this.getNetwork();
|
1925 | return this.perform("getEtherPrice", { });
|
1926 | }
|
1927 |
|
1928 | async _getBlockTag(blockTag: BlockTag | Promise<BlockTag>): Promise<BlockTag> {
|
1929 | blockTag = await blockTag;
|
1930 |
|
1931 | if (typeof(blockTag) === "number" && blockTag < 0) {
|
1932 | if (blockTag % 1) {
|
1933 | logger.throwArgumentError("invalid BlockTag", "blockTag", blockTag);
|
1934 | }
|
1935 |
|
1936 | let blockNumber = await this._getInternalBlockNumber(100 + 2 * this.pollingInterval);
|
1937 | blockNumber += blockTag;
|
1938 | if (blockNumber < 0) { blockNumber = 0; }
|
1939 | return this.formatter.blockTag(blockNumber)
|
1940 | }
|
1941 |
|
1942 | return this.formatter.blockTag(blockTag);
|
1943 | }
|
1944 |
|
1945 |
|
1946 | async getResolver(name: string): Promise<null | Resolver> {
|
1947 | let currentName = name;
|
1948 | while (true) {
|
1949 | if (currentName === "" || currentName === ".") { return null; }
|
1950 |
|
1951 |
|
1952 |
|
1953 | if (name !== "eth" && currentName === "eth") { return null; }
|
1954 |
|
1955 |
|
1956 | const addr = await this._getResolver(currentName, "getResolver");
|
1957 |
|
1958 |
|
1959 | if (addr != null) {
|
1960 | const resolver = new Resolver(this, addr, name);
|
1961 |
|
1962 |
|
1963 | if (currentName !== name && !(await resolver.supportsWildcard())) { return null; }
|
1964 |
|
1965 | return resolver;
|
1966 | }
|
1967 |
|
1968 |
|
1969 | currentName = currentName.split(".").slice(1).join(".");
|
1970 | }
|
1971 |
|
1972 | }
|
1973 |
|
1974 | async _getResolver(name: string, operation?: string): Promise<string> {
|
1975 | if (operation == null) { operation = "ENS"; }
|
1976 |
|
1977 | const network = await this.getNetwork();
|
1978 |
|
1979 |
|
1980 | if (!network.ensAddress) {
|
1981 | logger.throwError(
|
1982 | "network does not support ENS",
|
1983 | Logger.errors.UNSUPPORTED_OPERATION,
|
1984 | { operation, network: network.name }
|
1985 | );
|
1986 | }
|
1987 |
|
1988 | try {
|
1989 |
|
1990 | const addrData = await this.call({
|
1991 | to: network.ensAddress,
|
1992 | data: ("0x0178b8bf" + namehash(name).substring(2))
|
1993 | });
|
1994 | return this.formatter.callAddress(addrData);
|
1995 | } catch (error) {
|
1996 |
|
1997 | }
|
1998 |
|
1999 | return null;
|
2000 | }
|
2001 |
|
2002 | async resolveName(name: string | Promise<string>): Promise<null | string> {
|
2003 | name = await name;
|
2004 |
|
2005 |
|
2006 | try {
|
2007 | return Promise.resolve(this.formatter.address(name));
|
2008 | } catch (error) {
|
2009 |
|
2010 | if (isHexString(name)) { throw error; }
|
2011 | }
|
2012 |
|
2013 | if (typeof(name) !== "string") {
|
2014 | logger.throwArgumentError("invalid ENS name", "name", name);
|
2015 | }
|
2016 |
|
2017 |
|
2018 | const resolver = await this.getResolver(name);
|
2019 | if (!resolver) { return null; }
|
2020 |
|
2021 | return await resolver.getAddress();
|
2022 | }
|
2023 |
|
2024 | async lookupAddress(address: string | Promise<string>): Promise<null | string> {
|
2025 | address = await address;
|
2026 | address = this.formatter.address(address);
|
2027 |
|
2028 | const node = address.substring(2).toLowerCase() + ".addr.reverse";
|
2029 |
|
2030 | const resolverAddr = await this._getResolver(node, "lookupAddress");
|
2031 | if (resolverAddr == null) { return null; }
|
2032 |
|
2033 |
|
2034 | const name = _parseString(await this.call({
|
2035 | to: resolverAddr,
|
2036 | data: ("0x691f3431" + namehash(node).substring(2))
|
2037 | }), 0);
|
2038 |
|
2039 | const addr = await this.resolveName(name);
|
2040 | if (addr != address) { return null; }
|
2041 |
|
2042 | return name;
|
2043 | }
|
2044 |
|
2045 | async getAvatar(nameOrAddress: string): Promise<null | string> {
|
2046 | let resolver: Resolver = null;
|
2047 | if (isHexString(nameOrAddress)) {
|
2048 |
|
2049 | const address = this.formatter.address(nameOrAddress);
|
2050 |
|
2051 | const node = address.substring(2).toLowerCase() + ".addr.reverse";
|
2052 |
|
2053 | const resolverAddress = await this._getResolver(node, "getAvatar");
|
2054 | if (!resolverAddress) { return null; }
|
2055 |
|
2056 |
|
2057 | resolver = new Resolver(this, resolverAddress, node);
|
2058 | try {
|
2059 | const avatar = await resolver.getAvatar();
|
2060 | if (avatar) { return avatar.url; }
|
2061 | } catch (error) {
|
2062 | if (error.code !== Logger.errors.CALL_EXCEPTION) { throw error; }
|
2063 | }
|
2064 |
|
2065 |
|
2066 | try {
|
2067 |
|
2068 | const name = _parseString(await this.call({
|
2069 | to: resolverAddress,
|
2070 | data: ("0x691f3431" + namehash(node).substring(2))
|
2071 | }), 0);
|
2072 | resolver = await this.getResolver(name);
|
2073 | } catch (error) {
|
2074 | if (error.code !== Logger.errors.CALL_EXCEPTION) { throw error; }
|
2075 | return null;
|
2076 | }
|
2077 |
|
2078 | } else {
|
2079 |
|
2080 | resolver = await this.getResolver(nameOrAddress);
|
2081 | if (!resolver) { return null; }
|
2082 | }
|
2083 |
|
2084 | const avatar = await resolver.getAvatar();
|
2085 | if (avatar == null) { return null; }
|
2086 |
|
2087 | return avatar.url;
|
2088 | }
|
2089 |
|
2090 | perform(method: string, params: any): Promise<any> {
|
2091 | return logger.throwError(method + " not implemented", Logger.errors.NOT_IMPLEMENTED, { operation: method });
|
2092 | }
|
2093 |
|
2094 | _startEvent(event: Event): void {
|
2095 | this.polling = (this._events.filter((e) => e.pollable()).length > 0);
|
2096 | }
|
2097 |
|
2098 | _stopEvent(event: Event): void {
|
2099 | this.polling = (this._events.filter((e) => e.pollable()).length > 0);
|
2100 | }
|
2101 |
|
2102 | _addEventListener(eventName: EventType, listener: Listener, once: boolean): this {
|
2103 | const event = new Event(getEventTag(eventName), listener, once)
|
2104 | this._events.push(event);
|
2105 | this._startEvent(event);
|
2106 |
|
2107 | return this;
|
2108 | }
|
2109 |
|
2110 | on(eventName: EventType, listener: Listener): this {
|
2111 | return this._addEventListener(eventName, listener, false);
|
2112 | }
|
2113 |
|
2114 | once(eventName: EventType, listener: Listener): this {
|
2115 | return this._addEventListener(eventName, listener, true);
|
2116 | }
|
2117 |
|
2118 |
|
2119 | emit(eventName: EventType, ...args: Array<any>): boolean {
|
2120 | let result = false;
|
2121 |
|
2122 | let stopped: Array<Event> = [ ];
|
2123 |
|
2124 | let eventTag = getEventTag(eventName);
|
2125 | this._events = this._events.filter((event) => {
|
2126 | if (event.tag !== eventTag) { return true; }
|
2127 |
|
2128 | setTimeout(() => {
|
2129 | event.listener.apply(this, args);
|
2130 | }, 0);
|
2131 |
|
2132 | result = true;
|
2133 |
|
2134 | if (event.once) {
|
2135 | stopped.push(event);
|
2136 | return false;
|
2137 | }
|
2138 |
|
2139 | return true;
|
2140 | });
|
2141 |
|
2142 | stopped.forEach((event) => { this._stopEvent(event); });
|
2143 |
|
2144 | return result;
|
2145 | }
|
2146 |
|
2147 | listenerCount(eventName?: EventType): number {
|
2148 | if (!eventName) { return this._events.length; }
|
2149 |
|
2150 | let eventTag = getEventTag(eventName);
|
2151 | return this._events.filter((event) => {
|
2152 | return (event.tag === eventTag);
|
2153 | }).length;
|
2154 | }
|
2155 |
|
2156 | listeners(eventName?: EventType): Array<Listener> {
|
2157 | if (eventName == null) {
|
2158 | return this._events.map((event) => event.listener);
|
2159 | }
|
2160 |
|
2161 | let eventTag = getEventTag(eventName);
|
2162 | return this._events
|
2163 | .filter((event) => (event.tag === eventTag))
|
2164 | .map((event) => event.listener);
|
2165 | }
|
2166 |
|
2167 | off(eventName: EventType, listener?: Listener): this {
|
2168 | if (listener == null) {
|
2169 | return this.removeAllListeners(eventName);
|
2170 | }
|
2171 |
|
2172 | const stopped: Array<Event> = [ ];
|
2173 |
|
2174 | let found = false;
|
2175 |
|
2176 | let eventTag = getEventTag(eventName);
|
2177 | this._events = this._events.filter((event) => {
|
2178 | if (event.tag !== eventTag || event.listener != listener) { return true; }
|
2179 | if (found) { return true; }
|
2180 | found = true;
|
2181 | stopped.push(event);
|
2182 | return false;
|
2183 | });
|
2184 |
|
2185 | stopped.forEach((event) => { this._stopEvent(event); });
|
2186 |
|
2187 | return this;
|
2188 | }
|
2189 |
|
2190 | removeAllListeners(eventName?: EventType): this {
|
2191 | let stopped: Array<Event> = [ ];
|
2192 | if (eventName == null) {
|
2193 | stopped = this._events;
|
2194 |
|
2195 | this._events = [ ];
|
2196 | } else {
|
2197 | const eventTag = getEventTag(eventName);
|
2198 | this._events = this._events.filter((event) => {
|
2199 | if (event.tag !== eventTag) { return true; }
|
2200 | stopped.push(event);
|
2201 | return false;
|
2202 | });
|
2203 | }
|
2204 |
|
2205 | stopped.forEach((event) => { this._stopEvent(event); });
|
2206 |
|
2207 | return this;
|
2208 | }
|
2209 | }
|
2210 |
|
\ | No newline at end of file |