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https://github.com/ceph/ceph-csi.git
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f87d06ed85
Several packages are only used while running the e2e suite. These packages are less important to update, as the they can not influence the final executable that is part of the Ceph-CSI container-image. By moving these dependencies out of the main Ceph-CSI go.mod, it is easier to identify if a reported CVE affects Ceph-CSI, or only the testing (like most of the Kubernetes CVEs). Signed-off-by: Niels de Vos <ndevos@ibm.com>
69 lines
2.3 KiB
Go
69 lines
2.3 KiB
Go
// Copyright 2023 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package oauth2
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import (
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"crypto/rand"
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"crypto/sha256"
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"encoding/base64"
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"net/url"
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)
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const (
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codeChallengeKey = "code_challenge"
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codeChallengeMethodKey = "code_challenge_method"
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codeVerifierKey = "code_verifier"
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)
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// GenerateVerifier generates a PKCE code verifier with 32 octets of randomness.
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// This follows recommendations in RFC 7636.
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//
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// A fresh verifier should be generated for each authorization.
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// S256ChallengeOption(verifier) should then be passed to Config.AuthCodeURL
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// (or Config.DeviceAccess) and VerifierOption(verifier) to Config.Exchange
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// (or Config.DeviceAccessToken).
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func GenerateVerifier() string {
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// "RECOMMENDED that the output of a suitable random number generator be
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// used to create a 32-octet sequence. The octet sequence is then
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// base64url-encoded to produce a 43-octet URL-safe string to use as the
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// code verifier."
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// https://datatracker.ietf.org/doc/html/rfc7636#section-4.1
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data := make([]byte, 32)
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if _, err := rand.Read(data); err != nil {
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panic(err)
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}
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return base64.RawURLEncoding.EncodeToString(data)
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}
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// VerifierOption returns a PKCE code verifier AuthCodeOption. It should be
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// passed to Config.Exchange or Config.DeviceAccessToken only.
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func VerifierOption(verifier string) AuthCodeOption {
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return setParam{k: codeVerifierKey, v: verifier}
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}
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// S256ChallengeFromVerifier returns a PKCE code challenge derived from verifier with method S256.
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//
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// Prefer to use S256ChallengeOption where possible.
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func S256ChallengeFromVerifier(verifier string) string {
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sha := sha256.Sum256([]byte(verifier))
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return base64.RawURLEncoding.EncodeToString(sha[:])
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}
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// S256ChallengeOption derives a PKCE code challenge derived from verifier with
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// method S256. It should be passed to Config.AuthCodeURL or Config.DeviceAccess
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// only.
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func S256ChallengeOption(verifier string) AuthCodeOption {
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return challengeOption{
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challenge_method: "S256",
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challenge: S256ChallengeFromVerifier(verifier),
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}
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}
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type challengeOption struct{ challenge_method, challenge string }
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func (p challengeOption) setValue(m url.Values) {
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m.Set(codeChallengeMethodKey, p.challenge_method)
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m.Set(codeChallengeKey, p.challenge)
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}
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