298 lines
9.3 KiB
Nim
298 lines
9.3 KiB
Nim
# Nimbus
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# Copyright (c) 2018-2019 Status Research & Development GmbH
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# Licensed under either of
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# * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or
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# http://www.apache.org/licenses/LICENSE-2.0)
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# * MIT license ([LICENSE-MIT](LICENSE-MIT) or
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# http://opensource.org/licenses/MIT)
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# at your option. This file may not be copied, modified, or distributed except
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# according to those terms.
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## Test Jwt Authorisation Functionality
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## ====================================
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import
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std/[base64, json, options, os, strutils, tables, times],
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../nimbus/config,
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../nimbus/rpc/jwt_auth,
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./replay/pp,
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confutils/defs,
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chronicles,
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chronos/apps/http/httpserver,
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eth/[common, keys, p2p],
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json_rpc/rpcserver,
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nimcrypto/[hmac, utils],
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stew/results,
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stint,
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unittest2
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type
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UnGuardedKey =
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array[jwtMinSecretLen,byte]
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const
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jwtKeyFile ="jwtsecret.txt" # external shared secret file
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jwtKeyStripped ="jwtstripped.txt" # without leading 0x
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jwtKeyCopy = jwtSecretFile # file containing effective data key
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baseDir = [".", "..", ".."/"..", $DirSep]
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repoDir = [".", "tests" / "test_jwt_auth"]
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let
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fakeKey = block:
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var rc: JwtSharedKey
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discard rc.fromHex((0..31).mapIt(15 - (it mod 16)).mapIt(it.byte).toHex)
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rc
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# ------------------------------------------------------------------------------
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# Helpers
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# ------------------------------------------------------------------------------
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proc findFilePath(file: string): Result[string,void] =
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for dir in baseDir:
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for repo in repoDir:
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let path = dir / repo / file
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if path.fileExists:
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return ok(path)
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err()
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proc say*(noisy = false; pfx = "***"; args: varargs[string, `$`]) =
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if noisy:
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if args.len == 0:
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echo "*** ", pfx
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elif 0 < pfx.len and pfx[^1] != ' ':
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echo pfx, " ", args.toSeq.join
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else:
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echo pfx, args.toSeq.join
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proc setTraceLevel =
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discard
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when defined(chronicles_runtime_filtering) and loggingEnabled:
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setLogLevel(LogLevel.TRACE)
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proc setErrorLevel =
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discard
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when defined(chronicles_runtime_filtering) and loggingEnabled:
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setLogLevel(LogLevel.ERROR)
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# ------------------------------------------------------------------------------
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# Private Functions
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# ------------------------------------------------------------------------------
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proc fakeGenSecret(fake: JwtSharedKey): JwtGenSecret =
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## Key random generator, fake version
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result = proc: JwtSharedKey =
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fake
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proc base64urlEncode(x: auto): string =
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## from nimbus-eth2, engine_authentication.nim
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base64.encode(x, safe = true).replace("=", "")
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func getIatToken*(time: uint64): JsonNode =
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## from nimbus-eth2, engine_authentication.nim
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%* {"iat": time}
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proc getSignedToken*(key: openArray[byte], payload: string): string =
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## from nimbus-eth2, engine_authentication.nim
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# Using hard coded string for """{"typ": "JWT", "alg": "HS256"}"""
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let sData = "eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9." & base64urlEncode(payload)
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sData & "." & sha256.hmac(key, sData).data.base64UrlEncode
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proc getSignedToken2*(key: openArray[byte], payload: string): string =
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## Variant of `getSignedToken()`: different algorithm encoding
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let
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jNode = %* {"alg": "HS256", "typ": "JWT" }
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sData = base64urlEncode($jNode) & "." & base64urlEncode(payload)
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sData & "." & sha256.hmac(key, sData).data.base64UrlEncode
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proc getHttpAuthReqHeader(secret: JwtSharedKey; time: uint64): HttpTable =
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let bearer = secret.UnGuardedKey.getSignedToken($getIatToken(time))
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result.add("aUtHoRiZaTiOn", "Bearer " & bearer)
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proc getHttpAuthReqHeader2(secret: JwtSharedKey; time: uint64): HttpTable =
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let bearer = secret.UnGuardedKey.getSignedToken2($getIatToken(time))
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result.add("aUtHoRiZaTiOn", "Bearer " & bearer)
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# ------------------------------------------------------------------------------
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# Test Runners
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# ------------------------------------------------------------------------------
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proc runKeyLoader(noisy = true;
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keyFile = jwtKeyFile; strippedFile = jwtKeyStripped) =
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let
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filePath = keyFile.findFilePath.value
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fileInfo = keyFile.splitFile.name.split(".")[0]
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strippedPath = strippedFile.findFilePath.value
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strippedInfo = strippedFile.splitFile.name.split(".")[0]
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dataDir = filePath.splitPath.head
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localKeyFile = dataDir / jwtKeyCopy
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dataDirCmdOpt = &"--data-dir={dataDir}"
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jwtSecretCmdOpt = &"--jwt-secret={filePath}"
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jwtStrippedCmdOpt = &"--jwt-secret={strippedPath}"
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suite "EngineAuth: Load or generate shared secrets":
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test &"Load shared key file {fileInfo}":
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let
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config = @[dataDirCmdOpt,jwtSecretCmdOpt].makeConfig
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secret = fakeKey.fakeGenSecret.jwtSharedSecret(config)
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lines = config.jwtSecret.get.string.readLines(1)
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check secret.isOk
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check 0 < lines.len
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let
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hexKey = "0x" & secret.value.UnGuardedKey.toHex
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hexFake = "0x" & fakeKey.UnGuardedKey.toSeq.toHex
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hexLine = lines[0].strip
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noisy.say "***", "key=", hexKey
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noisy.say " ", "text=", hexLine
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noisy.say " ", "fake=", hexFake
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# Compare key against tcontents of shared key file
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check hexKey.cmpIgnoreCase(hexLine) == 0
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# Just to make sure that there was no random generator used
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check hexKey.cmpIgnoreCase(hexFake) != 0
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test &"Load shared key file {strippedInfo}, missing 0x prefix":
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let
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config = @[dataDirCmdOpt,jwtStrippedCmdOpt].makeConfig
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secret = fakeKey.fakeGenSecret.jwtSharedSecret(config)
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lines = config.jwtSecret.get.string.readLines(1)
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check secret.isOk
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check 0 < lines.len
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let
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hexKey = secret.value.UnGuardedKey.toHex
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hexFake = fakeKey.UnGuardedKey.toSeq.toHex
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hexLine = lines[0].strip
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noisy.say "***", "key=", hexKey
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noisy.say " ", "text=", hexLine
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noisy.say " ", "fake=", hexFake
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# Compare key against tcontents of shared key file
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check hexKey.cmpIgnoreCase(hexLine) == 0
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# Just to make sure that there was no random generator used
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check hexKey.cmpIgnoreCase(hexFake) != 0
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test &"Generate shared key file, store it in {jwtKeyCopy}":
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# Clean up after file generation
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defer: localKeyFile.removeFile
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# Maybe a stale left over
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localKeyFile.removeFile
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let
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config = @[dataDirCmdOpt].makeConfig
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secret = fakeKey.fakeGenSecret.jwtSharedSecret(config)
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lines = localKeyFile.readLines(1)
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check secret.isOk
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let
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hexKey = "0x" & secret.value.UnGuardedKey.toHex
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hexLine = lines[0].strip
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noisy.say "***", "key=", hexKey
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noisy.say " ", "text=", hexLine
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# Compare key against tcontents of shared key file
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check hexKey.cmpIgnoreCase(hexLine) == 0
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proc runJwtAuth(noisy = true; keyFile = jwtKeyFile) =
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let
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filePath = keyFile.findFilePath.value
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fileInfo = keyFile.splitFile.name.split(".")[0]
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dataDir = filePath.splitPath.head
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dataDirCmdOpt = &"--data-dir={dataDir}"
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jwtSecretCmdOpt = &"--jwt-secret={filePath}"
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config = @[dataDirCmdOpt,jwtSecretCmdOpt].makeConfig
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# The secret is just used for extracting the key, it would otherwise
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# be hidden in the closure of the handler function
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secret = fakeKey.fakeGenSecret.jwtSharedSecret(config)
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# The wrapper contains the handler function with the captured shared key
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handler = secret.value.jwtAuthHandler
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suite "EngineAuth: Http/rpc authentication mechanics":
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test &"JSW/HS256 authentication using shared secret file {fileInfo}":
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# Just to make sure that we made a proper choice. Typically, all
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# ingredients shoud have been tested, already in the preceeding test
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# suite.
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let
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lines = config.jwtSecret.get.string.readLines(1)
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hexKey = "0x" & secret.value.UnGuardedKey.toHex
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hexLine = lines[0].strip
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noisy.say "***", "key=", hexKey
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noisy.say " ", "text=", hexLine
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check hexKey.cmpIgnoreCase(hexLine) == 0
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let
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time = getTime().toUnix.uint64
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req = secret.value.getHttpAuthReqHeader(time)
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noisy.say "***", "request",
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" Authorization=", req.getString("Authorization")
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setTraceLevel()
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# Run http authorisation request
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let htCode = req.handler
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noisy.say "***", "result",
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" htCode=", htCode
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check htCode.isOk
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setErrorLevel()
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test &"JSW/HS256, ditto with protected header variant":
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let
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time = getTime().toUnix.uint64
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req = secret.value.getHttpAuthReqHeader2(time)
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# Assemble request header
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noisy.say "***", "request",
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" Authorization=", req.getString("Authorization")
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setTraceLevel()
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# Run http authorisation request
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let htCode = req.handler
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noisy.say "***", "result",
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" htCode=", htCode
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check htCode.isOk
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setErrorLevel()
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# ------------------------------------------------------------------------------
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# Main function(s)
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# ------------------------------------------------------------------------------
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proc jwtAuthMain*(noisy = defined(debug)) =
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noisy.runKeyLoader
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noisy.runJwtAuth
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when isMainModule:
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const
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noisy = defined(debug)
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setErrorLevel()
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noisy.runKeyLoader
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noisy.runJwtAuth
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# ------------------------------------------------------------------------------
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# End
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# ------------------------------------------------------------------------------
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