refactor: drop old golang-jwt/jwt dependency

We are only using a small method that has nothing to do with jwt, it's better
to copy the method and drop the dependency.

NOTICE.txt

@@ -17540,25 +17540,6 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 
 
---------------------------------------------------------------------------------
-Dependency : github.com/golang-jwt/jwt/v5
-Version: v5.0.0
-Licence type (autodetected): MIT
---------------------------------------------------------------------------------
-
-Contents of probable licence file $GOMODCACHE/github.com/golang-jwt/jwt/v5@v5.0.0/LICENSE:
-
-Copyright (c) 2012 Dave Grijalva
-Copyright (c) 2021 golang-jwt maintainers
-
-Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-
-
-
 --------------------------------------------------------------------------------
 Dependency : github.com/golang/mock
 Version: v1.6.0
@@ -40825,6 +40806,25 @@ THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLI
 
 
 
+--------------------------------------------------------------------------------
+Dependency : github.com/golang-jwt/jwt/v5
+Version: v5.0.0
+Licence type (autodetected): MIT
+--------------------------------------------------------------------------------
+
+Contents of probable licence file $GOMODCACHE/github.com/golang-jwt/jwt/v5@v5.0.0/LICENSE:
+
+Copyright (c) 2012 Dave Grijalva
+Copyright (c) 2021 golang-jwt maintainers
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+
+
 --------------------------------------------------------------------------------
 Dependency : github.com/golang-sql/civil
 Version: v0.0.0-20190719163853-cb61b32ac6fe

go.mod

@@ -215,7 +215,6 @@ require (
  github.com/foxcpp/go-mockdns v0.0.0-20201212160233-ede2f9158d15
  github.com/g8rswimmer/go-sfdc v0.0.0-00010101000000-000000000000
  github.com/go-ldap/ldap/v3 v3.4.6
- github.com/golang-jwt/jwt/v5 v5.0.0
  github.com/google/cel-go v0.19.0
  github.com/googleapis/gax-go/v2 v2.12.0
  github.com/gorilla/handlers v1.5.1
@@ -307,6 +306,7 @@ require (
  github.com/goccy/go-json v0.10.2 // indirect
  github.com/godror/knownpb v0.1.0 // indirect
  github.com/golang-jwt/jwt/v4 v4.5.0 // indirect
+ github.com/golang-jwt/jwt/v5 v5.0.0 // indirect
  github.com/golang-sql/civil v0.0.0-20190719163853-cb61b32ac6fe // indirect
  github.com/golang-sql/sqlexp v0.1.0 // indirect
  github.com/golang/groupcache v0.0.0-20210331224755-41bb18bfe9da // indirect

x-pack/filebeat/input/salesforce/input.go

@@ -7,8 +7,11 @@ package salesforce
 import (
  "bytes"
  "context"
+ "crypto/rsa"
+ "crypto/x509"
  "encoding/csv"
  "encoding/json"
+ "encoding/pem"
  "errors"
  "fmt"
  "io"
@@ -20,7 +23,6 @@ import (
  "github.com/g8rswimmer/go-sfdc/credentials"
  "github.com/g8rswimmer/go-sfdc/session"
  "github.com/g8rswimmer/go-sfdc/soql"
- "github.com/golang-jwt/jwt/v5"
  "github.com/hashicorp/go-retryablehttp"
  "go.uber.org/zap"
  "golang.org/x/exp/slices"
@@ -409,7 +411,7 @@ func (s *salesforceInput) getSFDCConfig(cfg *config) (*sfdc.Configuration, error
  return nil, fmt.Errorf("problem with client key path for JWT auth: %w", err)
  }
 
- signKey, err := jwt.ParseRSAPrivateKeyFromPEM(pemBytes)
+ signKey, err := parseRSAPrivateKeyFromPEM(pemBytes)
  if err != nil {
  return nil, fmt.Errorf("problem with client key for JWT auth: %w", err)
  }
@@ -454,6 +456,27 @@ func (s *salesforceInput) getSFDCConfig(cfg *config) (*sfdc.Configuration, error
  }, nil
 }
 
+func parseRSAPrivateKeyFromPEM(key []byte) (*rsa.PrivateKey, error) {
+ // Parse PEM block
+ var block *pem.Block
+ if block, _ = pem.Decode(key); block == nil {
+ return nil, errors.New("Invalid Key: Key must be a PEM encoded PKCS1 or PKCS8 key")
+ }
+
+ if parsedKey, err := x509.ParsePKCS1PrivateKey(block.Bytes); err == nil {
+ return parsedKey, nil
+ }
+
+ if parsedKey, err := x509.ParsePKCS8PrivateKey(block.Bytes); err == nil {
+ if pkey, ok := parsedKey.(*rsa.PrivateKey); ok {
+ return pkey, nil
+ }
+
+ }
+
+ return nil, errors.New("Key is not a valid RSA private key")
+}
+
 // retryLog is a shim for the retryablehttp.Client.Logger.
 type retryLog struct{ log *logp.Logger }