mirror of
https://github.com/golang/oauth2.git
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95bec95381
go/programmable-auth-design for context. Adds support for user defined supplier methods to return subject tokens and AWS security credentials. Change-Id: I7bc41f8c5202ae933fce516632f5049bbeb3d378 GitHub-Last-Rev: ac519b242f8315df572f1b205b0670f139bfc6c3 GitHub-Pull-Request: golang/oauth2#690 Reviewed-on: https://go-review.googlesource.com/c/oauth2/+/550835 LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Leo Siracusa <leosiracusa@google.com> Reviewed-by: Chris Smith <chrisdsmith@google.com> TryBot-Result: Gopher Robot <gobot@golang.org> Reviewed-by: Cody Oss <codyoss@google.com>
65 lines
1.6 KiB
Go
65 lines
1.6 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 externalaccount
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import (
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"runtime"
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"strings"
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"unicode"
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)
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var (
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// version is a package internal global variable for testing purposes.
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version = runtime.Version
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)
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// versionUnknown is only used when the runtime version cannot be determined.
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const versionUnknown = "UNKNOWN"
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// goVersion returns a Go runtime version derived from the runtime environment
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// that is modified to be suitable for reporting in a header, meaning it has no
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// whitespace. If it is unable to determine the Go runtime version, it returns
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// versionUnknown.
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func goVersion() string {
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const develPrefix = "devel +"
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s := version()
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if strings.HasPrefix(s, develPrefix) {
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s = s[len(develPrefix):]
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if p := strings.IndexFunc(s, unicode.IsSpace); p >= 0 {
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s = s[:p]
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}
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return s
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} else if p := strings.IndexFunc(s, unicode.IsSpace); p >= 0 {
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s = s[:p]
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}
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notSemverRune := func(r rune) bool {
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return !strings.ContainsRune("0123456789.", r)
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}
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if strings.HasPrefix(s, "go1") {
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s = s[2:]
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var prerelease string
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if p := strings.IndexFunc(s, notSemverRune); p >= 0 {
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s, prerelease = s[:p], s[p:]
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}
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if strings.HasSuffix(s, ".") {
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s += "0"
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} else if strings.Count(s, ".") < 2 {
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s += ".0"
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}
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if prerelease != "" {
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// Some release candidates already have a dash in them.
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if !strings.HasPrefix(prerelease, "-") {
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prerelease = "-" + prerelease
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}
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s += prerelease
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}
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return s
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}
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return "UNKNOWN"
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}
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