From bcb10b0536818a56e7792a22e1977778203cfed1 Mon Sep 17 00:00:00 2001
From: Justin Starry <justin@solana.com>
Date: Sun, 5 Apr 2020 17:23:38 +0800
Subject: [PATCH] Display owner names when known

---
 explorer/src/components/AccountsCard.tsx |  4 +-
 explorer/src/utils.ts                    | 52 ++++++++++++++++++++++++
 2 files changed, 54 insertions(+), 2 deletions(-)

diff --git a/explorer/src/components/AccountsCard.tsx b/explorer/src/components/AccountsCard.tsx
index 4cbb89ae71..6d669994fb 100644
--- a/explorer/src/components/AccountsCard.tsx
+++ b/explorer/src/components/AccountsCard.tsx
@@ -7,7 +7,7 @@ import {
   Account,
   Status
 } from "../providers/accounts";
-import { assertUnreachable } from "../utils";
+import { assertUnreachable, displayAddress } from "../utils";
 import { useCluster } from "../providers/cluster";
 import { PublicKey, LAMPORTS_PER_SOL } from "@solana/web3.js";
 
@@ -138,7 +138,7 @@ const renderAccountRow = (account: Account) => {
   let owner = "-";
   if (account.details) {
     data = `${account.details.space}`;
-    owner = `${account.details.owner.toBase58()}`;
+    owner = displayAddress(account.details.owner);
   }
 
   let balance = "-";
diff --git a/explorer/src/utils.ts b/explorer/src/utils.ts
index 1d8d583a67..a1601cc81a 100644
--- a/explorer/src/utils.ts
+++ b/explorer/src/utils.ts
@@ -1,3 +1,15 @@
+import {
+  PublicKey,
+  SystemProgram,
+  StakeProgram,
+  VOTE_PROGRAM_ID,
+  BpfLoader,
+  SYSVAR_CLOCK_PUBKEY,
+  SYSVAR_RENT_PUBKEY,
+  SYSVAR_REWARDS_PUBKEY,
+  SYSVAR_STAKE_HISTORY_PUBKEY
+} from "@solana/web3.js";
+
 export function findGetParameter(parameterName: string): string | null {
   let result = null,
     tmp = [];
@@ -34,3 +46,43 @@ export function findPathSegment(pathName: string): string | null {
 export function assertUnreachable(x: never): never {
   throw new Error("Unreachable!");
 }
+
+const PROGRAM_IDS = {
+  Budget1111111111111111111111111111111111111: "Budget Program",
+  Config1111111111111111111111111111111111111: "Config Program",
+  Exchange11111111111111111111111111111111111: "Exchange Program",
+  [StakeProgram.programId.toBase58()]: "Stake Program",
+  Storage111111111111111111111111111111111111: "Storage Program",
+  [SystemProgram.programId.toBase58()]: "System Program",
+  Vest111111111111111111111111111111111111111: "Vest Program",
+  [VOTE_PROGRAM_ID.toBase58()]: "Vote Program"
+};
+
+const LOADER_IDS = {
+  MoveLdr111111111111111111111111111111111111: "Move Loader",
+  NativeLoader1111111111111111111111111111111: "Native Loader",
+  [BpfLoader.programId.toBase58()]: "BPF Loader"
+};
+
+const SYSVAR_IDS = {
+  Sysvar1111111111111111111111111111111111111: "SYSVAR",
+  [SYSVAR_CLOCK_PUBKEY.toBase58()]: "SYSVAR_CLOCK",
+  SysvarEpochSchedu1e111111111111111111111111: "SYSVAR_EPOCH_SCHEDULE",
+  SysvarFees111111111111111111111111111111111: "SYSVAR_FEES",
+  SysvarRecentB1ockHashes11111111111111111111: "SYSVAR_RECENT_BLOCKHASHES",
+  [SYSVAR_RENT_PUBKEY.toBase58()]: "SYSVAR_RENT",
+  [SYSVAR_REWARDS_PUBKEY.toBase58()]: "SYSVAR_REWARDS",
+  SysvarS1otHashes111111111111111111111111111: "SYSVAR_SLOT_HASHES",
+  SysvarS1otHistory11111111111111111111111111: "SYSVAR_SLOT_HISTORY",
+  [SYSVAR_STAKE_HISTORY_PUBKEY.toBase58()]: "SYSVAR_STAKE_HISTORY"
+};
+
+export function displayAddress(pubkey: PublicKey): string {
+  const address = pubkey.toBase58();
+  return (
+    PROGRAM_IDS[address] ||
+    LOADER_IDS[address] ||
+    SYSVAR_IDS[address] ||
+    address
+  );
+}