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Introduce env. variable NOTARY_AUTH for setting username & password #1246

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merged 1 commit into from
Oct 25, 2017
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Merged

Introduce env. variable NOTARY_AUTH for setting username & password #1246

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25 changes: 25 additions & 0 deletions cmd/notary/tuf.go
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Original file line number Diff line number Diff line change
Expand Up @@ -3,6 +3,7 @@ package main
import (
"bufio"
"crypto/x509"
"encoding/base64"
"encoding/hex"
"encoding/pem"
"fmt"
Expand Down Expand Up @@ -785,6 +786,30 @@ func (ps passwordStore) Basic(u *url.URL) (string, string) {
return "", ""
}

auth := os.Getenv("NOTARY_AUTH")
if auth != "" {
dec, err := base64.StdEncoding.DecodeString(auth)
if err != nil {
logrus.Error("Could not base64-decode authentication string")
return "", ""
}
plain := string(dec)

i := strings.Index(plain, ":")
if i == 0 {
logrus.Error("Authentication string with zero-legnth username")
return "", ""
} else if i > -1 {
username := plain[:i]
password := plain[i+1:]
password = strings.TrimSpace(password)
return username, password
}

logrus.Error("Malformatted authentication string; format must be <username>:<password>")
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I'm debating whether it makes sense for this to be a fatal error here. This is only used in the CLI so it seems like it would be desirable to exit ASAP if we've made the decision the inputs are bad. Thoughts?

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Would be fine by me. I followed the existing pattern where we don't exit with fatal error on timeout from keyboard input, either. Maybe that should then be changed as well in either a preceding patch or one on top of this here...

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The test cases would not be able to test false inputs, though. Running into failures would exit the test case...

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hmmm yeah, definitely prefer having the tests work properly. We'll leave this as is 👍

return "", ""
}

stdin := bufio.NewReader(os.Stdin)
input := make(chan string, 1)
fmt.Fprintf(os.Stdout, "Enter username: ")
Expand Down
28 changes: 28 additions & 0 deletions cmd/notary/tuf_test.go
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Original file line number Diff line number Diff line change
@@ -1,6 +1,7 @@
package main

import (
"encoding/base64"
"io/ioutil"
"net/http"
"net/http/httptest"
Expand Down Expand Up @@ -308,3 +309,30 @@ func TestPasswordStore(t *testing.T) {
require.Equal(t, "", ps.RefreshToken(myurl, "someService"))
}
}

func TestPasswordStoreWithEnvvar(t *testing.T) {
myurl, err := url.Parse("https://docker.io")
require.NoError(t, err)

ps := passwordStore{}

creds := base64.StdEncoding.EncodeToString([]byte("me:mypassword"))
os.Setenv("NOTARY_AUTH", creds)

username, passwd := ps.Basic(myurl)
require.Equal(t, "me", username)
require.Equal(t, "mypassword", passwd)

creds = base64.StdEncoding.EncodeToString([]byte(":mypassword"))
os.Setenv("NOTARY_AUTH", creds)

username, passwd = ps.Basic(myurl)
require.Equal(t, "", username)
require.Equal(t, "", passwd)

os.Setenv("NOTARY_AUTH", "not-base64-encoded")

username, passwd = ps.Basic(myurl)
require.Equal(t, "", username)
require.Equal(t, "", passwd)
}