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|
package pinentry
import (
"fmt"
"os"
"strings"
"git.sr.ht/~rjarry/aerc/lib/log"
)
var missingGPGTTYmsg = `
You need to set GPG_TTY manually before starting aerc. Add the following to your
.bashrc or whatever initialization file is used for shell invocations:
GPG_TTY=$(tty)
export GPG_TTY
Further information can be found here:
https://www.gnupg.org/documentation/manuals/gnupg/Invoking-GPG_002dAGENT.html
`
// ttyname returns current name of the pty. This is necessary in order to tell
// pinentry where to ask for the passphrase.
//
// If there is a GPG_TTY environment variable set, use this one. Otherwise, try
// readline() on /proc/<pid>/fd/0.
//
// If both approaches fail, the user's only option is to set GPG_TTY manually.
//
// If tty name could not be determined, an empty string is returned.
func ttyname() string {
if s := os.Getenv("GPG_TTY"); s != "" {
return s
}
// try readlink or else show missing GPG_TTY warning msg
tty, err := os.Readlink(fmt.Sprintf("/proc/%d/fd/0", os.Getpid()))
if err != nil {
log.Debugf("readlink: '%s' with err: %v", tty, err)
log.Warnf(missingGPGTTYmsg)
return ""
}
return strings.TrimSpace(tty)
}
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