44d8e9b975
This PR adds support for oidc in mcs, to enable idp authentication you need to pass the following environment variables and restart mcs. ``` MCS_IDP_URL="" MCS_IDP_CLIENT_ID="" MCS_IDP_SECRET="" MCS_IDP_CALLBACK="" ```
61 lines
2.0 KiB
Go
61 lines
2.0 KiB
Go
// This file is part of MinIO Console Server
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// Copyright (c) 2020 MinIO, Inc.
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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package utils
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import (
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"crypto/hmac"
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"crypto/rand"
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"crypto/sha256"
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"encoding/base64"
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"io"
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"strings"
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)
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// Do not use:
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// https://stackoverflow.com/questions/22892120/how-to-generate-a-random-string-of-a-fixed-length-in-go
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// It relies on math/rand and therefore not on a cryptographically secure RNG => It must not be used
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// for access/secret keys.
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// The alphabet of random character string. Each character must be unique.
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//
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// The RandomCharString implementation requires that: 256 / len(letters) is a natural numbers.
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// For example: 256 / 64 = 4. However, 5 > 256/62 > 4 and therefore we must not use a alphabet
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// of 62 characters.
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// The reason is that if 256 / len(letters) is not a natural number then certain characters become
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// more likely then others.
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const letters = "ABCDEFGHIJKLMNOPQRSTUVWXYZ012345"
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func RandomCharString(n int) string {
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random := make([]byte, n)
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if _, err := io.ReadFull(rand.Reader, random); err != nil {
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panic(err) // Can only happen if we would run out of entropy.
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}
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var s strings.Builder
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for _, v := range random {
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j := v % byte(len(letters))
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s.WriteByte(letters[j])
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}
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return s.String()
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}
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func ComputeHmac256(message string, key []byte) string {
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h := hmac.New(sha256.New, key)
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h.Write([]byte(message))
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return base64.StdEncoding.EncodeToString(h.Sum(nil))
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}
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